/* CSS 层叠管理 */
:root {
    /* Brand Colors - Updated to match followme.com */
    --color-accent: #FF7A50;
    --color-link: #1F72E8;
    --color-accent-hover: #E56A40;
    --color-accent-solid: #D45F35;
    --color-accent-light: #FFF0EB;

    /* Footer (for dark mode readiness) */
    --color-footer-bg: #282828;
    --color-footer-text: #a0a0a0;
    --color-footer-heading: #fff;
    --color-footer-accent: #FF7A50;
    --color-footer-border: #333;
    --color-footer-text-muted: #999;
    --color-footer-social-bg: rgba(255, 255, 255, 0.1);
    --color-footer-social-bg-hover: rgba(255, 255, 255, 0.2);
    --color-accent-rgb: 253, 99, 0;
    --color-accent-dark: #C45A30;
    --color-gradient-accent: #FF9A70;
    --color-on-accent: #ffffff;
    --color-bg-placeholder-start: #f8f9fa;
    --color-bg-placeholder-end: #e9ecef;
    --touch-target-min: 44px;

    /* Neutral Colors */
    --color-bg: #f5f6f8;
    --color-bg-warm: #faf9f7;
    --color-bg-hover: #0000000D;
    --color-surface: #ffffff;
    --color-surface-hover: #fafbfc;
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4b5563;
    --color-text-muted: #565d67;
    --color-border: #e5e7eb;
    --color-border-light: #f3f4f6;

    /* Typography */
    --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 28px;
    --font-size-4xl: 32px;

    /* Spacing Scale */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;

    /* Shadows */
    --shadow-none: none;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05), 0 1px 1px -1px rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 4px 6px -2px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-accent: 0 4px 14px rgba(var(--color-accent-rgb), 0.25);
    --shadow-focus: 0 0 0 2px var(--color-accent-hover);

    /* Font Weight */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    /* Line Height */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 1.8;

    /* Z-Index */
    --z-base: 0;
    --z-above: 10;
    --z-dropdown: 1000;
    --z-sticky: 2000;
    --z-header: 3000;
    --z-drawer: 3001;
    --z-overlay: 2999;
    --z-modal: 4000;
    --z-tooltip: 5000;
    --z-skip-link: 10000;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Border Width */
    --border-width-none: 0;
    --border-width-sm: 1px;
    --border-width-md: 2px;
    --border-width-lg: 4px;

    /* Layout */
    --container-max-width: 1200px;
    --container-padding: 24px;
    --border-radius-circle: 50%;
    --border-radius-none: 0;
    --border-radius-xs: 4px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
    --border-radius-full: 9999px;
  }

  *,
  *::before,
  *::after {
    box-sizing: border-box;
  }

  body {
    background: var(--color-bg);
    font-family: var(--font-sans);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    margin: 0;
    min-height: 100vh;
  }

  /* Global link reset */
  a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
  }

  a:hover {
    color: var(--color-accent-hover);
  }

  /* Global cite reset */
  cite {
    font-style: normal;
    color: inherit;
  }

  /* Focus management */
  :focus-visible {
    outline: none;
    border-radius: var(--border-radius-xs);
  }

  /* Visually hidden for screen readers */
  .visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  /* Reduced motion */
  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
    }
  }

  /* ============ Header Placeholder ============ */
  .header-placeholder {
    width: 100%;
    height: 56px;
    background: transparent;
  }

  /* ============ Header Bar ============ */
  .baike-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-4);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
  }

  .baike-header__start {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    height: 100%;
    flex: 1;
    min-width: 0;
  }

  .baike-header__end {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    height: 100%;
    flex-shrink: 0;
  }

  /* ============ Logo ============ */
  .baike-header__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
    min-height: var(--touch-target-min);
  }

  .baike-header__logo img {
    height: 36px;
    width: auto;
  }

  /* Logo Dark Mode Toggle */
  .baike-logo-dark {
    display: none;
  }

  [data-theme="dark"] .baike-logo-light {
    display: none;
  }

  [data-theme="dark"] .baike-logo-dark {
    display: block;
  }

  /* ============ Search ============ */
  .baike-header__search {
    display: flex;
    align-items: center;
    background: var(--color-bg);
    border-radius: var(--border-radius-full);
    height: 40px;
    padding: 0 var(--space-4);
    flex-shrink: 0;
    transition: background var(--transition-fast), box-shadow var(--transition-fast);
  }

  .baike-header__search:focus-within {
    background: var(--color-border-light);
  }

  .baike-header__search:hover {
    background: var(--color-border-light);
  }

  .baike-header__search-icon {
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    flex-shrink: 0;
  }

  .baike-header__search-input {
    border: none;
    background: transparent;
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    width: clamp(120px, 12vw, 200px);
    padding: 0 var(--space-2);
    font-family: var(--font-sans);
  }

  .baike-header__search-input::placeholder {
    color: var(--color-text-muted);
  }

  .baike-header__search-input:focus-visible {
    outline: none;
    box-shadow: none;
    border-radius: 0;
  }

  /* ============ Navigation (PC) ============ */
  .baike-header__nav {
    display: flex;
    align-items: center;
    height: 100%;
  }

  .baike-header__nav-link {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-lg);
    font-weight: 400;
    color: var(--color-text-primary);
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--border-radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    min-height: var(--touch-target-min);
  }

  .baike-header__nav-link:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
  }

  .baike-header__nav-link--active {
    color: var(--color-text-primary);
    background: var(--color-bg-hover);
  }

  /* ============ Login Button ============ */
  .baike-header__login {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    padding: 0 var(--space-3);
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-accent-solid);
    background: transparent;
    border: 1px solid var(--color-accent-solid);
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--border-radius-full);
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
    flex-shrink: 0;
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    cursor: pointer;
  }

  .baike-header__login:hover {
    color: var(--color-on-accent);
    background: var(--color-accent-solid);
    border-color: var(--color-accent-hover);
  }

  /* ============ Register Button ============ */
  .baike-header__register {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    padding: 0 var(--space-3);
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-on-accent);
    background: var(--color-accent-solid);
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--border-radius-full);
    transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
    flex-shrink: 0;
    min-width: var(--touch-target-min);
    min-height: var(--touch-target-min);
    cursor: pointer;
  }

  .baike-header__register:hover {
    color: var(--color-on-accent);
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: none;
  }

  /* ============ Header User (Logged In) ============ */
  .baike-header__user {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1);
    text-decoration: none;
    border-radius: var(--border-radius-full);
    transition: background var(--transition-fast);
    min-height: var(--touch-target-min);
    min-width: var(--touch-target-min);
  }

  .baike-header__user:hover {
    background: var(--color-accent-light);
    color: var(--color-accent-hover);
  }

  .baike-header__user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--color-border-light);
    flex-shrink: 0;
  }

  .baike-header__user-name {
    font-size: var(--font-size-sm);
    color: inherit;
  }

  /* ============ Drawer User (Mobile) ============ */
  .baike-header__drawer-user {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    height: 36px;
    padding: 0 var(--space-3);
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-accent-solid);
    background: transparent;
    border: 1px solid var(--color-accent-solid);
    text-decoration: none;
    white-space: nowrap;
    border-radius: var(--border-radius-full);
    transition: color var(--transition-fast), background var(--transition-fast);
    min-height: var(--touch-target-min);
  }

  .baike-header__drawer-user:hover {
    color: var(--color-on-accent);
    background: var(--color-accent-solid);
  }

  .baike-header__drawer-user-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
  }

  /* ============ Mobile Hamburger ============ */
  .baike-header__menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    padding: var(--space-2);
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--color-text-primary);
    border-radius: var(--border-radius-sm);
    flex-shrink: 0;
  }

  .baike-header__menu-btn:hover {
    background: var(--color-accent-light);
  }

  /* ============ Mobile Drawer Overlay ============ */
  .baike-header__drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .baike-header__drawer-overlay--open {
    opacity: 1;
    visibility: visible;
  }

  /* ============ Mobile Drawer ============ */
  .baike-header__drawer {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--color-surface);
    z-index: var(--z-drawer);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
  }

  .baike-header__drawer--open {
    transform: translateX(0);
  }

  .baike-header__drawer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--color-border);
  }

  .baike-header__drawer-logo {
    height: 32px;
    width: auto;
  }

  .baike-header__drawer-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    padding: var(--space-2);
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--color-text-primary);
    border-radius: var(--border-radius-sm);
  }

  .baike-header__drawer-close:hover {
    background: var(--color-accent-light);
  }

  .baike-header__drawer-user-top {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--color-border);
    text-decoration: none;
    color: var(--color-text-primary);
    transition: background var(--transition-fast);
  }

  .baike-header__drawer-user-top:hover {
    background: var(--color-bg-hover);
  }

  .baike-header__drawer-user-top-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    flex-shrink: 0;
  }

  .baike-header__drawer-user-top-name {
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-text-primary);
  }

  .baike-header__drawer-content {
    flex: 1;
    padding: var(--space-2) 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }

  .baike-header__drawer-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text-primary);
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-sans);
    text-align: left;
    min-height: var(--touch-target-min);
  }

  .baike-header__drawer-arrow {
    transition: transform var(--transition-base);
    flex-shrink: 0;
  }

  .baike-header__drawer-item--open .baike-header__drawer-arrow {
    transform: rotate(180deg);
  }

  .baike-header__drawer-sub {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
  }

  .baike-header__drawer-sub--open {
    max-height: 500px;
  }

  .baike-header__drawer-sub-link {
    display: block;
    padding: var(--space-1) var(--space-5) var(--space-1) calc(var(--space-5) + var(--space-4));
    font-size: var(--font-size-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    line-height: 1.6;
    min-height: var(--touch-target-min);
    display: flex;
    align-items: center;
  }

  .baike-header__drawer-sub-link:hover {
    color: var(--color-accent-hover);
  }

  .baike-header__drawer-footer {
    padding: var(--space-3);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
  }

  .baike-header__drawer-footer-row {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: relative;
  }

  .baike-header__drawer-list-btn {
    display: flex;
    align-items: center;
    padding: var(--space-2) var(--space-5);
    background: none;
    border: none;
    border-bottom: 1px solid var(--color-border-light);
    border-radius: 0;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    cursor: pointer;
    transition: background var(--transition-fast);
    min-height: 40px;
    width: 100%;
    gap: var(--space-2);
  }

  .baike-header__drawer-list-btn:last-child {
    border-bottom: none;
  }

  .baike-header__drawer-list-btn:hover {
    background: var(--color-bg-hover);
  }

  .baike-header__drawer-list-btn-text {
    font-weight: 500;
  }

  .baike-header__drawer-list-btn-value {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
  }

  .baike-header__drawer-lang-wrapper {
    position: relative;
    width: 100%;
  }

  .baike-header__drawer-lang-dropdown {
    position: absolute;
    bottom: calc(100% + var(--space-2));
    left: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-dropdown);
    padding: var(--space-2);
    min-width: 160px;
    display: none;
    flex-direction: column;
    gap: var(--space-1);
    z-index: 1100;
  }

  .baike-header__drawer-lang-dropdown.is-open {
    display: flex;
  }

  .baike-header__drawer-lang-option {
    padding: var(--space-1) var(--space-3);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    background: none;
    border: none;
    text-align: left;
    transition: background var(--transition-fast);
    min-height: 36px;
  }

  .baike-header__drawer-lang-option:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
  }

  .baike-header__drawer-login,
  .baike-header__drawer-register {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-1) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-fast);
    min-height: 36px;
    width: 100%;
  }

  .baike-header__drawer-login {
    color: var(--color-accent);
    background: var(--color-surface);
    border: 1px solid var(--color-accent);
  }

  .baike-header__drawer-login:hover {
    background: var(--color-accent-light);
  }

  .baike-header__drawer-register {
    color: var(--color-on-accent);
    background: var(--color-accent-solid);
    border: 1px solid var(--color-accent-solid);
  }

  .baike-header__drawer-register:hover {
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
  }

  .baike-header__drawer-user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-1) var(--space-3);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--border-radius-md);
    transition: background var(--transition-fast);
    min-height: 36px;
    width: 100%;
  }

  .baike-header__drawer-user:hover {
    background: var(--color-bg-hover);
  }

  .baike-header__drawer-user-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    object-fit: cover;
  }

  /* ============ Header Responsive ============ */
  @media screen and (max-width: 1024px) {
    .baike-header__nav {
      display: none;
    }

    .baike-header__search {
      display: none;
    }

    .baike-header__menu-btn {
      display: flex;
    }
  }

  @media screen and (max-width: 750px) {
    .baike-header {
      padding: 0 var(--space-3);
    }

    .baike-header__start {
      gap: var(--space-2);
    }

    .baike-header__end {
      gap: var(--space-2);
    }

    .baike-header__logo img {
      height: 24px;
    }

    .baike-header__user-avatar {
      width: 28px;
      height: 28px;
    }

    .baike-header__hide-mobile {
      display: none !important;
    }

    .baike-lang-switcher__btn {
      padding: var(--space-1) var(--space-2);
      font-size: var(--font-size-xs);
      min-height: 32px;
    }

    .baike-header__register {
      height: 32px;
      font-size: var(--font-size-base);
      padding: 0 var(--space-3);
    }
  }

  @media (hover: none) {
    a:hover {
      color: var(--color-text-primary);
    }

    .baike-header__nav-link:hover {
      background: transparent;
      color: var(--color-text-primary);
    }

    .baike-header__login:hover {
      color: var(--color-accent-solid);
      background: transparent;
      border-color: var(--color-accent-solid);
    }

    .baike-header__register:hover {
      color: var(--color-on-accent);
      background: var(--color-accent-solid);
      transform: none;
      box-shadow: none;
    }

    .baike-header__user:hover {
      background: transparent;
      color: var(--color-text-primary);
    }

    .baike-header__menu-btn:hover {
      background: transparent;
    }

    .baike-header__search:hover {
      background: var(--color-bg);
    }

    .baike-header__drawer-close:hover {
      background: transparent;
    }

    .baike-header__drawer-register:hover {
      background: var(--color-accent-solid);
    }

    .baike-header__drawer-user:hover {
      color: var(--color-accent-solid);
      background: transparent;
    }
    .baike-header__drawer-sub-link:hover {
      color: var(--color-text-secondary);
    }
  }

  /* ============ Skip Link ============ */

.skip-link:focus {
    position: fixed;
    top: var(--space-2);
    left: var(--space-2);
    z-index: var(--z-skip-link);
    width: auto;
    height: auto;
    padding: var(--space-2) var(--space-4);
    clip: auto;
    background: var(--color-accent-hover);
    color: var(--color-on-accent);
    font-size: var(--font-size-md);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius-sm);
  }

  /* Layout */
  .content {
    margin: var(--space-6) auto var(--space-10);
    position: relative;
  }

  .detail {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
  }

  /* ============ Breadcrumb Base ============ */
  .breadcrumb-list {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .breadcrumb-item a {
    display: inline-flex;
    align-items: center;
    min-height: var(--touch-target-min);
    text-decoration: none;
    transition: color var(--transition-fast);
  }

  /* ============ Article Content (Rich Text) ============ */
  .article-content {
    line-height: 1.8;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
  }

  .article-content > *:first-child {
    margin-top: 0;
  }

  .article-content > *:last-child {
    margin-bottom: 0;
  }

  .article-content h1,
  .article-content h2,
  .article-content h3,
  .article-content h4,
  .article-content h5,
  .article-content h6 {
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
    color: var(--color-text-primary);
    font-weight: 600;
    line-height: 1.4;
  }

  .article-content h1 {
    font-size: var(--font-size-2xl);
  }

  .article-content h2 {
    font-size: var(--font-size-xl);
  }

  .article-content h3 {
    font-size: var(--font-size-lg);
  }

  .article-content h4 {
    font-size: var(--font-size-md);
  }

  .article-content h5,
  .article-content h6 {
    font-size: var(--font-size-base);
  }

  .article-content p {
    margin-top: 0;
    margin-bottom: var(--space-4);
    line-height: 1.8;
  }

  .article-content a {
    color: var(--color-accent-hover);
    text-decoration: underline;
    text-underline-offset: 2px;
  }

  .article-content a:hover {
    color: var(--color-accent-hover);
  }

  .article-content strong,
  .article-content b {
    font-weight: 600;
    color: var(--color-text-primary);
  }

  .article-content em,
  .article-content i {
    font-style: italic;
  }

  .article-content ul,
  .article-content ol {
    margin-top: 0;
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
  }

  .article-content ul {
    list-style-type: disc;
  }

  .article-content ol {
    list-style-type: decimal;
  }

  .article-content li {
    margin-bottom: var(--space-2);
    line-height: 1.8;
  }

  .article-content li > ul,
  .article-content li > ol {
    margin-top: var(--space-2);
    margin-bottom: 0;
  }

  .article-content blockquote {
    margin: var(--space-6) 0;
    padding: var(--space-4) var(--space-6);
    border-left: 3px solid var(--color-accent);
    background: var(--color-bg);
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    color: var(--color-text-secondary);
  }

  .article-content blockquote p:last-child {
    margin-bottom: 0;
  }

  .article-content figure {
    margin: var(--space-4) 0;
  }

  .article-content figcaption {
    margin-top: var(--space-2);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    text-align: center;
  }

  .article-content dl {
    margin: var(--space-4) 0;
  }

  .article-content dt {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-top: var(--space-3);
  }

  .article-content dd {
    margin-left: var(--space-6);
    margin-bottom: var(--space-2);
    color: var(--color-text-secondary);
  }

  .article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    margin: var(--space-4) 0;
    display: block;
  }

  .article-content table {
    width: 100%;
    max-width: 100%;
    border-collapse: collapse;
    margin: var(--space-4) 0;
    font-size: var(--font-size-sm);
  }

  .article-content th,
  .article-content td {
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    text-align: left;
  }

  .article-content th {
    background: var(--color-bg);
    font-weight: 600;
    color: var(--color-text-primary);
  }

  .article-content tr:nth-child(even) {
    background: var(--color-bg);
  }

  .article-content pre {
    background: var(--color-bg);
    padding: var(--space-4);
    border-radius: var(--border-radius-sm);
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin: var(--space-4) 0;
  }

  .article-content code {
    background: var(--color-bg);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--border-radius-xs);
    font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
    font-size: var(--font-size-sm);
    color: var(--color-accent-hover);
  }

  .article-content pre code {
    background: none;
    padding: 0;
    color: inherit;
  }

  .article-content hr {
    border: none;
    border-top: 1px solid var(--color-border);
    margin: var(--space-8) 0;
  }

  .article-content iframe,
  .article-content video {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    margin: var(--space-4) 0;
  }

  /* Mobile article content */
  @media screen and (max-width: 750px) {
    .article-content {
      font-size: var(--font-size-md);
    }

    .article-content h2 {
      font-size: var(--font-size-lg);
    }

    .article-content h3 {
      font-size: var(--font-size-md);
    }

    .article-content h4,
    .article-content h5,
    .article-content h6 {
      font-size: var(--font-size-base);
    }

    .article-content blockquote {
      padding: var(--space-3) var(--space-4);
    }

    .article-content th,
    .article-content td {
      padding: var(--space-2) var(--space-3);
    }
  }


  /* Grid fallback for older browsers */
  @supports not (display: grid) {
    .article-grid {
      display: flex;
      flex-wrap: wrap;
    }
  }

  /* Container Queries */
  @supports (container-type: inline-size) {
    .content-section {
      container-type: inline-size;
      container-name: section;
    }
  }

  /* Animations */
  @keyframes spin {
    to { transform: rotate(360deg); }
  }

  /* ============ Common Components (from category/tags) ============ */
  
  /* Breadcrumb */
  .breadcrumb-nav {
    padding: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
  }

  .breadcrumb-nav a {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
    min-height: var(--touch-target-min);
    display: inline-flex;
    align-items: center;
  }

  .breadcrumb-nav a:hover {
    color: var(--color-accent-hover);
  }

  .breadcrumb-item.active {
    color: var(--color-text-primary);
  }

  .breadcrumb-separator {
    color: var(--color-text-muted);
  }

  .breadcrumb-nav--mobile {
    display: none;
    padding: 0 var(--space-4);
    height: var(--touch-target-min);
    align-items: center;
    background: var(--color-bg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
  }

  .breadcrumb-nav--mobile a {
    display: inline-flex;
    align-items: center;
    color: var(--color-text-muted);
    text-decoration: none;
    min-height: var(--touch-target-min);
  }

  /* Category Layout */
  .category-page {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
  }

  .category-layout {
    display: flex;
    flex-direction: row;
    gap: var(--space-4);
    margin-top: var(--space-6);
  }

  .category-main {
    flex: 1;
    min-width: 0;
  }

  .category-sidebar {
    width: 300px;
    flex-shrink: 0;
  }

  /* Article List */
  .article-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
  }

  .article-list-item {
    display: flex;
    gap: var(--space-5);
    padding: var(--space-5);
    background: var(--color-surface);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: box-shadow var(--transition-fast), border-color var(--transition-fast);
    min-height: var(--touch-target-min);
    position: relative;
  }

  .article-list-link {
    position: absolute;
    inset: 0;
    z-index: 0;
    display: block;
  }

  .article-list-title a,
  .article-list-thumb a {
    position: relative;
    z-index: 1;
  }

  .article-list-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
  }

  .article-list-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }

  .article-list-thumb {
    width: 200px;
    height: 130px;
    flex-shrink: 0;
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    background: var(--color-bg);
  }

  .article-list-thumb a {
    display: block;
    width: 100%;
    height: 100%;
  }

  .article-list-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
  }

  .article-list-item:hover .article-list-thumb img {
    transform: scale(1.05);
  }

  .article-list-title {
    margin: 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    line-height: 1.4;
  }

  .article-list-title a {
    color: var(--color-text-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
    min-height: var(--touch-target-min);
    display: inline-flex;
    align-items: center;
  }

  .article-list-title a:hover {
    color: var(--color-accent-hover);
  }

  .article-list-excerpt {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .article-list-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    flex-wrap: wrap;
  }

  .article-list-tags {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
  }

  /* ---------- Tags ---------- */
  .tag-ref {
    color: var(--color-text-secondary);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--transition-fast);
  }

  .tag-ref:hover {
    color: var(--color-accent-hover);
  }

  .tag-meta {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-3);
    background-color: var(--color-bg);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    min-height: var(--touch-target-min);
  }

  .tag-meta:hover {
    background-color: rgba(var(--color-accent-rgb), 0.1);
    color: var(--color-accent-hover);
    box-shadow: var(--shadow-sm);
    transform: translateY(-1px);
  }

  .bk-common-box .tag-meta {
    color: var(--color-text-secondary);
    display: inline-flex;
    transition: background-color var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
    line-height: normal;
  }

  .bk-common-box .tag-meta:hover {
    color: var(--color-accent-hover);
  }

  .article-list-reads {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    white-space: nowrap;
  }

  .article-list-reads svg {
    margin-right: 2px;
  }

  /* Load More */
  .load-more {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: var(--space-3) var(--space-6);
    margin-top: var(--space-5);
    font-size: var(--font-size-md);
    color: var(--color-link);
    background: var(--color-surface);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-family: var(--font-sans);
    transition: color var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
    min-height: var(--touch-target-min);
  }

  .load-more:hover {
    color: var(--color-on-accent);
    background: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
  }

  /* Sidebar Card */
  .sidebar-card {
    background: var(--color-surface);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--space-4);
    overflow: hidden;
  }

  .sidebar-card .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
  }

  .sidebar-card .card-header h3 {
    margin: 0;
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex: 1;
    min-width: 0;
    word-break: keep-all;
    overflow-wrap: normal;
  }

  .sidebar-card .card-header a {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color var(--transition-fast);
    min-height: var(--touch-target-min);
    display: inline-flex;
    align-items: center;
  }

  .sidebar-card .card-header a:hover {
    color: var(--color-accent-hover);
  }

  .sidebar-card .card-body {
    padding: var(--space-3) var(--space-4);
  }

  /* Article Links */
  .article-link-list {
    list-style: none;
    margin: 0;
    padding: 0;
  }

  .article-link-item {
    padding: var(--space-2) 0;
    border-bottom: 1px solid var(--color-border-light);
  }

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

  .article-link-title a {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    text-decoration: none;
    line-height: 1.5;
    transition: color var(--transition-fast);
    min-height: var(--touch-target-min);
    display: flex;
    align-items: center;
  }

  .article-link-title a:hover {
    color: var(--color-accent-hover);
  }

  .article-link-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-1);
  }

  /* To Ask */
  .to-ask-card .ask-users {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    list-style: none;
    margin: 0 0 var(--space-4) 0;
    padding: 0;
  }

  .to-ask-card .ask-users li {
    text-align: center;
    max-width: 64px;
  }

  .to-ask-card .ask-users img {
    width: var(--space-8);
    height: var(--space-8);
    border-radius: var(--border-radius-circle);
    object-fit: cover;
    margin-bottom: var(--space-1);
  }

  .to-ask-card .ask-users span {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .to-ask-card .ask-action {
    text-align: center;
    margin-bottom: var(--space-2);
  }

  .to-ask-card .ask-action a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-accent-hover);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    background: var(--color-accent-light);
    transition: color var(--transition-fast), background var(--transition-fast);
    min-height: var(--touch-target-min);
  }

  .to-ask-card .ask-action a:hover {
    color: var(--color-on-accent);
    background: var(--color-accent-hover);
  }

  .to-ask-card .ask-stats {
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
  }

  /* Common Box */
  .bk-common-box {
    background: var(--color-surface);
    border: none;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--space-4);
  }

  .bk-common-box .title {
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-light);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    word-break: keep-all;
    overflow-wrap: normal;
  }

  .bk-common-box ul {
    list-style: none;
    margin: 0;
    padding: var(--space-3) var(--space-4);
  }

  .bk-common-box li {
    padding: var(--space-1) 0;
  }

  .bk-common-box li a {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    text-decoration: none;
    line-height: 1.6;
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color var(--transition-fast);
    min-height: var(--touch-target-min);
    display: flex;
    align-items: center;
  }

  .bk-common-box li a:hover {
    color: var(--color-accent-hover);
  }

  /* Empty State */
  .empty-state {
    text-align: center;
    padding: var(--space-10) var(--space-5);
    color: var(--color-text-muted);
    font-size: var(--font-size-md);
  }

  /* ============ Weibo Component ============ */
  .weibo-list {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .weibo-list li {
    padding: var(--space-4) 0;
    border-bottom: var(--border-width-sm) solid var(--color-border);
  }

  .weibo-list li:last-child {
    border-bottom: none;
  }

  .weibo-list .weibo-user {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-2);
  }

  .weibo-list .weibo-user img {
    width: var(--space-8);
    height: var(--space-8);
    border-radius: var(--border-radius-circle);
    object-fit: cover;
  }

  .weibo-list .weibo-user .user-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
  }

  .weibo-list .weibo-user .post-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
  }

  .weibo-list .weibo-title {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
    line-height: 1.4;
  }

  .weibo-list .weibo-intro {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    line-height: 1.5;
    margin-bottom: var(--space-2);
  }

  .weibo-list .weibo-stats {
    display: flex;
    gap: var(--space-4);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
  }

  .weibo-list .weibo-stats span {
    display: flex;
    align-items: center;
    gap: var(--space-1);
  }

  .weibo-jump {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-3);
    color: var(--color-accent-hover);
    font-size: var(--font-size-sm);
    border-top: var(--border-width-sm) solid var(--color-border);
    transition: background var(--transition-fast);
    min-height: var(--touch-target-min);
  }

  .weibo-jump:hover {
    background: var(--color-bg);
    color: var(--color-accent-hover);
  }

  /* ============ Responsive: Tablet ============ */
  @media screen and (max-width: 1024px) {
    .category-sidebar {
      width: 260px;
    }
  }

  /* ============ Responsive: Mobile ============ */
  @media screen and (max-width: 750px) {
    .article-list {
      gap: 0;
    }

    .article-list-item {
      flex-direction: column-reverse;
      padding: 0 0 var(--space-4);
      border: none;
      border-radius: var(--border-radius-none);
      border-bottom: var(--border-width-sm) solid var(--color-border-light);
      gap: 0;
      margin-bottom: var(--space-2);
      background: var(--color-surface);
    }

    .article-list-thumb {
      width: 100%;
      height: auto;
      min-height: 120px;
      max-height: 200px;
      border-radius: var(--border-radius-sm);
      margin-bottom: var(--space-3);
      background: var(--color-bg);
    }

    .article-list-thumb img {
      display: block;
      width: 100%;
      height: auto;
      object-fit: cover;
    }

    .article-list-body {
      padding: 0 var(--space-4) var(--space-4);
    }

    .article-list-title {
      font-size: var(--font-size-md);
    }

    .article-list-excerpt {
      font-size: var(--font-size-base);
    }

    .article-list-meta {
      flex-direction: column;
      align-items: flex-start;
      gap: var(--space-2);
    }

    .article-list-reads {
      font-size: var(--font-size-sm);
    }

    .category-page {
      padding: 0;
      background: var(--color-surface);
    }

    .category-layout {
      flex-direction: column;
      gap: 0;
      margin-top: 0 !important;
      padding-top: 0 !important;
    }

    .category-sidebar {
      display: none;
    }

    .category-main {
      background: var(--color-surface);
      margin-top: 0 !important;
      padding-top: 0 !important;
    }

    .article-list {
      margin-top: 0 !important;
      padding-top: 0 !important;
    }

    .breadcrumb-nav {
      display: none;
    }

    .breadcrumb-nav--mobile {
      display: flex;
      margin-bottom: 0;
    }

    .content {
      margin-top: var(--space-2);
      margin-bottom: var(--space-6);
    }

    .load-more {
      margin: var(--space-4);
      width: calc(100% - var(--space-8));
    }
  }

  /* ============ Touch Device Reset ============ */
  @media (hover: none) {
    .article-list-item:hover {
      box-shadow: var(--shadow-sm);
      border-color: var(--color-border);
    }

    .article-list-item:hover .article-list-thumb img {
      transform: none;
    }

    .article-list-title a:hover {
      color: var(--color-text-primary);
    }

    .tag-meta:hover {
      background-color: var(--color-bg);
      color: var(--color-text-secondary);
      box-shadow: none;
      transform: none;
    }

    .tag-meta:active {
      background-color: var(--color-accent);
      color: var(--color-on-accent);
      box-shadow: var(--shadow-accent);
      transform: scale(0.96);
      transition-duration: 0.05s;
    }

    .load-more:hover {
      color: var(--color-accent-hover);
      background: var(--color-surface);
      border-color: var(--color-border);
    }

    .sidebar-card .card-header a:hover {
      color: var(--color-text-muted);
    }

    .article-link-title a:hover {
      color: var(--color-text-primary);
    }

    .to-ask-card .ask-action a:hover {
      color: var(--color-accent-hover);
      background: var(--color-accent-light);
    }

    .bk-common-box li a:hover {
      color: var(--color-text-primary);
    }

    .bk-common-box .tag-meta:hover {
      color: var(--color-text-secondary);
    }

    .breadcrumb-nav a:hover {
      color: var(--color-text-muted);
    }

    .weibo-jump:hover {
      color: var(--color-accent-hover);
    }

    .article-content a:hover {
      color: var(--color-accent-hover);
    }
  }

  /* ============ Load More Disabled ============ */
  .load-more:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    position: relative;
  }

  .load-more:disabled::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: var(--space-2);
    border: var(--border-width-md) solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.75s linear infinite;
    vertical-align: middle;
  }

  /* ============ Dark Mode ============ */
  [data-theme="dark"] {
    --color-bg: #0f1115;
    --color-bg-warm: #14161a;
    --color-surface: #1c1f26;
    --color-surface-hover: #252a33;
    --color-text-primary: #f0f0f5;
    --color-text-secondary: #a8adb8;
    --color-text-muted: #7a808c;
    --color-border: #2a2f3a;
    --color-border-light: #1e232d;
    --color-accent-light: rgba(var(--color-accent-rgb), 0.15);
    --color-bg-placeholder-start: #1c1f26;
    --color-bg-placeholder-end: #252a33;
    --color-footer-bg: #1c1f26;
    --color-footer-text: #7a808c;
    --color-footer-heading: #f0f0f5;
    --color-footer-border: #2a2f3a;
    --color-footer-text-muted: #5a6070;
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.50);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.55), 0 1px 2px -1px rgba(0, 0, 0, 0.50);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.55), 0 2px 4px -1px rgba(0, 0, 0, 0.50);
  }

  [data-theme="dark"] .baike-header {
    border-bottom-color: var(--color-border);
  }

  [data-theme="dark"] .baike-header__drawer-overlay {
    background: rgba(0, 0, 0, 0.7);
  }

  [data-theme="dark"] .baike-header__search {
    background: var(--color-border-light);
  }

  [data-theme="dark"] .baike-header__search:focus-within,
  [data-theme="dark"] .baike-header__search:hover {
    background: var(--color-border);
  }

  [data-theme="dark"] .tag-meta {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
  }

  [data-theme="dark"] .tag-meta:hover {
    background-color: var(--color-accent-light);
    border-color: var(--color-accent);
    color: var(--color-accent-hover);
  }

  [data-theme="dark"] .article-list-item:hover {
    box-shadow: var(--shadow-md);
  }

  /* ============ Language Switcher ============ */
  .baike-lang-switcher {
    position: relative;
    display: inline-flex;
  }

  .baike-lang-switcher__btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    min-height: var(--touch-target-min);
    transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  }

  .baike-lang-switcher__btn:hover {
    color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    background: var(--color-accent-light);
  }

  .baike-lang-switcher__label {
    text-transform: uppercase;
    letter-spacing: 0.05em;
  }

  .baike-lang-switcher__dropdown {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 180px;
    max-height: 480px;
    overflow-y: auto;
    z-index: var(--z-dropdown);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  }

  .baike-lang-switcher__dropdown--open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .baike-lang-switcher__option {
    display: block;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast);
    min-height: var(--touch-target-min);
  }

  .baike-lang-switcher__option:hover {
    background: var(--color-accent-light);
    color: var(--color-accent-hover);
  }

  [dir="rtl"] .baike-lang-switcher__dropdown {
    right: auto;
    left: 0;
  }

  [dir="rtl"] .baike-lang-switcher__option {
    text-align: right;
  }

  /* ============ Theme Toggle ============ */
  .baike-header__theme-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: var(--touch-target-min);
    height: var(--touch-target-min);
    padding: 0;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-full);
    flex-shrink: 0;
    transition: color var(--transition-fast), background var(--transition-fast);
  }

  .baike-header__theme-btn:hover {
    color: var(--color-accent-hover);
    background: var(--color-accent-light);
  }

  .baike-header__theme-icon--dark {
    display: none;
  }

  [data-theme="dark"] .baike-header__theme-icon--light {
    display: none;
  }

  [data-theme="dark"] .baike-header__theme-icon--dark {
    display: inline;
  }

  /* ============ RTL Overrides ============ */
  [dir="rtl"] {
    --font-sans: "Noto Sans Arabic", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  }

  [dir="rtl"] .baike-header__drawer {
    left: auto;
    right: 0;
    transform: translateX(100%);
  }

  [dir="rtl"] .baike-header__drawer--open {
    transform: translateX(0);
  }

  [dir="rtl"] .baike-header__drawer-item {
    text-align: right;
  }

  [dir="rtl"] .baike-header__drawer-sub-link {
    padding-left: var(--space-5);
    padding-right: calc(var(--space-5) + var(--space-4));
  }

  [dir="rtl"] .skip-link:focus {
    left: auto;
    right: var(--space-2);
  }

  [dir="rtl"] .article-content ul,
  [dir="rtl"] .article-content ol {
    padding-left: 0;
    padding-right: var(--space-6);
  }

  [dir="rtl"] .article-content blockquote {
    border-left: none;
    border-right: 3px solid var(--color-accent);
    border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
  }

  [dir="rtl"] .article-content dd {
    margin-left: 0;
    margin-right: var(--space-6);
  }

  [dir="rtl"] .article-content th,
  [dir="rtl"] .article-content td {
    text-align: right;
  }

  [dir="rtl"] .load-more:disabled::after {
    margin-left: 0;
    margin-right: var(--space-2);
    border-right-color: currentColor;
    border-left-color: transparent;
  }

  [dir="rtl"] .breadcrumb-nav--mobile svg,
  [dir="rtl"] .arrow,
  [dir="rtl"] .section-more .arrow {
    transform: scaleX(-1);
  }

  [dir="rtl"] .section-more:hover .arrow {
    transform: scaleX(-1) translateX(4px);
  }

  [dir="rtl"] .article-list-reads svg {
    margin-right: 0;
    margin-left: 2px;
  }

  /* ============ Footer 2026 ============ */
  .footer-2026 {
    background: var(--color-footer-bg);
    color: var(--color-footer-text);
    padding: 60px 0 30px;
    font-size: 14px;
    position: relative;
    clear: both;
    z-index: 1;
  }

  .footer-2026 a:focus,
  .footer-2026 a:focus-visible,
  .footer-2026 .social-link:focus,
  .footer-2026 .social-link:focus-visible {
    outline: 2px solid var(--color-footer-accent);
    outline-offset: 2px;
  }

  .footer-2026 .footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
  }

  .footer-2026 .footer-main {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
  }

  .footer-2026 .footer-brand {
    flex-shrink: 0;
    width: 200px;
  }

  .footer-2026 .footer-logo {
    font-size: 32px;
    font-weight: 600;
    color: var(--color-footer-heading);
    margin-bottom: 8px;
    letter-spacing: 1px;
    line-height: 1.2;
    font-family: "PingFangSC-Semibold", sans-serif;
  }

  .footer-2026 .footer-tagline {
    font-size: 14px;
    color: var(--color-footer-text);
    margin-bottom: 30px;
    line-height: 20px;
  }

  .footer-2026 .footer-social {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    max-width: 160px;
  }

  .footer-2026 .social-link {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--color-footer-social-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-footer-text);
    text-decoration: none;
    transition: var(--transition-base);
  }

  .footer-2026 .social-link:hover {
    background: var(--color-footer-social-bg-hover);
    color: var(--color-footer-heading);
  }

  .footer-2026 .social-link svg {
    width: 20px;
    height: 20px;
  }

  .footer-2026 .footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: auto auto;
    gap: 50px 80px;
    flex: 1;
    margin-left: 120px;
    align-items: start;
  }


  .footer-2026 .link-group {
    margin-bottom: 0;
  }

  .footer-2026 .link-group h3 {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-footer-heading);
    margin-bottom: 18px;
    line-height: 20px;
    font-family: "PingFangSC-Semibold", sans-serif;
  }

  .footer-2026 .link-group ul {
    list-style: none;
    padding: 0;
    margin: 0;
  }

  .footer-2026 .link-group li {
    margin-bottom: 0;
  }

  .footer-2026 .link-group a {
    color: var(--color-footer-text);
    text-decoration: none;
    font-size: 13px;
    line-height: 1.6;
    padding: 6px 0;
    transition: color var(--transition-fast);
    display: block;
    font-family: "PingFangSC-Regular", sans-serif;
  }

  .footer-2026 .link-group a:hover {
    color: var(--color-footer-accent);
  }

  .footer-2026 .footer-bottom {
    border-top: 1px solid var(--color-footer-border);
    padding-top: 30px;
    text-align: center;
  }

  .footer-2026 .footer-copyright {
    font-size: 14px;
    color: var(--color-footer-text);
    margin-bottom: 10px;
    line-height: 20px;
  }

  .footer-2026 .footer-desc {
    font-size: 12px;
    color: var(--color-footer-text-muted);
    line-height: 18px;
  }

  @media screen and (max-width: 1024px) {
    .footer-2026 .footer-main {
      flex-direction: column;
    }

    .footer-2026 .footer-brand {
      width: 100%;
      text-align: center;
      margin-bottom: 40px;
    }

    .footer-2026 .footer-social {
      justify-content: center;
      max-width: 100%;
    }

    .footer-2026 .footer-links {
      margin-left: 0;
      grid-template-columns: repeat(2, 1fr);
      gap: 0 40px;
    }
  }

  @media screen and (max-width: 750px) {
    .footer-2026 .footer-links {
      grid-template-columns: repeat(2, 1fr);
      gap: 30px 30px;
    }

    .footer-2026 .link-group h3 {
      font-size: 13px;
      margin-bottom: 14px;
    }

    .footer-2026 .link-group li {
      margin-bottom: 8px;
    }

    .footer-2026 .link-group a {
      font-size: 12px;
    }
  }

  @media screen and (max-width: 480px) {
    .footer-2026 .footer-links {
      grid-template-columns: 1fr;
    }

    .footer-2026 {
      padding: 40px 0 20px;
    }

    .footer-2026 .footer-container {
      padding: 0 20px;
    }

    .footer-2026 .link-group {
      margin-bottom: 30px;
    }
  }

  @media screen and (max-width: 768px) {
    .footer-2026 .footer-links {
      display: none;
    }
  }

  [dir="rtl"] .footer-2026 .footer-links {
    margin-left: 0;
    margin-right: 120px;
  }

  [dir="rtl"] .footer-2026 .footer-logo,
  [dir="rtl"] .footer-2026 .footer-tagline,
  [dir="rtl"] .footer-2026 .link-group h3,
  [dir="rtl"] .footer-2026 .link-group a,
  [dir="rtl"] .footer-2026 .social-link,
  [dir="rtl"] .footer-2026 .footer-copyright,
  [dir="rtl"] .footer-2026 .footer-desc {
    font-family: "Noto Naskh Arabic", "Noto Sans Arabic", "Arial", sans-serif;
  }

  @media screen and (max-width: 1024px) {
    [dir="rtl"] .footer-2026 .footer-links {
      margin-left: 0;
      margin-right: 0;
    }
  }

  @media (hover: none) {
    .footer-2026 .social-link:hover {
      background: var(--color-footer-social-bg);
      color: var(--color-footer-text);
    }
    .footer-2026 .link-group a:hover {
      color: var(--color-footer-text);
    }
  }