/* ============================================
   AI Investar - Main Stylesheet
   ============================================ */

:root {
  --color-primary: #FF6B35;
  --color-primary-dark: #E55A2B;
  --color-white: #FFFFFF;
  --color-cream: #FBFAF9;
  --color-light: #F7F5F3;
  --color-gray-100: #F3F1EF;
  --color-gray-200: #E8E4E0;
  --color-gray-300: #D1CCC6;
  --color-gray-400: #A8A29E;
  --color-gray-500: #78716C;
  --color-gray-600: #57534E;
  --color-gray-700: #44403C;
  --color-gray-800: #292524;
  --color-gray-900: #1C1917;
  --color-text: var(--color-gray-900);
  --color-text-secondary: var(--color-gray-600);
  --color-text-muted: var(--color-gray-500);
  --bg-body: var(--color-cream);
  --bg-card: var(--color-white);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
  --font-sans: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --transition-fast: 150ms ease;
  --container-max: 1280px;
  --header-height: 64px;
  --sidebar-width: 320px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body { font-family: var(--font-sans); font-size: 1rem; line-height: 1.6; color: var(--color-text); background-color: var(--bg-body); -webkit-font-smoothing: antialiased; }
body.menu-open { overflow: hidden; }
h1, h2, h3, h4, h5, h6 { font-weight: 700; line-height: 1.3; }
h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
p { margin-bottom: 1rem; }
a { color: var(--color-primary); text-decoration: none; }
a:hover { color: var(--color-primary-dark); }
img { max-width: 100%; height: auto; display: block; }
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 1rem; }

/* Header */
.header { background: var(--color-white); border-bottom: 1px solid var(--color-gray-200); position: sticky; top: 0; z-index: 100; height: var(--header-height); }
.header .container { height: 100%; }
.nav { display: flex; align-items: center; justify-content: space-between; height: 100%; }
.logo { display: flex; align-items: center; gap: 8px; text-decoration: none; }
.logo-icon { width: 32px; height: 32px; background: var(--color-primary); color: var(--color-white); border-radius: 6px; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 12px; }
.logo-text { font-size: 1.125rem; font-weight: 700; color: var(--color-text); }
.nav-menu { display: flex; align-items: center; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.nav-menu li { position: relative; }
.nav-menu .nav-link { display: flex; align-items: center; gap: 4px; padding: 0.5rem 0; color: var(--color-text); font-weight: 500; font-size: 0.9375rem; }
.nav-menu .nav-link:hover, .nav-menu .nav-link.active { color: var(--color-primary); }
.nav-menu .icon-down { transition: transform 0.2s; width: 16px; height: 16px; }
.nav-dropdown:hover .dropdown-menu { display: block; }
.nav-dropdown:hover .icon-down { transform: rotate(180deg); }
.dropdown-menu { display: none; position: absolute; top: 100%; left: 0; min-width: 180px; background: var(--color-white); border: 1px solid var(--color-gray-200); border-radius: 6px; box-shadow: var(--shadow-lg); padding: 0.5rem 0; z-index: 50; }
.dropdown-menu li { margin: 0; }
.dropdown-menu a { display: block; padding: 0.5rem 1rem; color: var(--color-text); font-size: 0.875rem; }
.dropdown-menu a:hover { background: var(--color-light); color: var(--color-primary); }
.nav-actions { display: flex; align-items: center; gap: 0.75rem; }
.search-form { display: flex; align-items: center; background: var(--color-light); border-radius: 20px; padding: 0.25rem 0.5rem; }
.search-input { border: none; background: transparent; padding: 0.25rem 0.5rem; font-size: 0.875rem; width: 140px; outline: none; }
.search-btn { border: none; background: transparent; cursor: pointer; color: var(--color-text-muted); padding: 4px; display: flex; }
.user-menu { display: flex; align-items: center; gap: 0.5rem; }

/* Mobile Menu Button */
.mobile-menu-btn { display: none; flex-direction: column; justify-content: center; gap: 5px; width: 40px; height: 40px; border: none; background: transparent; cursor: pointer; padding: 8px; border-radius: 6px; -webkit-tap-highlight-color: transparent; }
.mobile-menu-btn:hover { background: var(--color-light); }
.mobile-menu-btn span { display: block; width: 100%; height: 2px; background: var(--color-text); border-radius: 2px; transition: all 0.2s; transform-origin: center; }
.mobile-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.mobile-menu-btn.active span:nth-child(2) { opacity: 0; }
.mobile-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.5rem 1.25rem; font-family: var(--font-sans); font-size: 0.875rem; font-weight: 600; line-height: 1.5; white-space: nowrap; border: 2px solid transparent; border-radius: 6px; cursor: pointer; transition: all 0.2s; text-decoration: none; }
.btn-primary { color: var(--color-white); background: var(--color-primary); border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-dark); border-color: var(--color-primary-dark); color: var(--color-white); }
.btn-outline { color: var(--color-text); background: transparent; border-color: var(--color-gray-300); }
.btn-outline:hover { background: var(--color-light); border-color: var(--color-gray-400); color: var(--color-text); }
.btn-sm { padding: 0.25rem 0.75rem; font-size: 0.8125rem; }
.btn-lg { padding: 0.75rem 1.5rem; font-size: 1rem; }

/* Hero */
.hero { padding: 3rem 0; background: linear-gradient(135deg, var(--color-white) 0%, var(--color-cream) 100%); text-align: center; }
.hero-content { max-width: 640px; margin: 0 auto; }
.hero-title { font-size: 2.5rem; font-weight: 800; margin-bottom: 1rem; line-height: 1.2; }
.hero-title span { color: var(--color-primary); }
.hero-desc { font-size: 1rem; color: var(--color-text-secondary); margin-bottom: 1.5rem; }
.hero-actions { display: flex; gap: 0.75rem; justify-content: center; flex-wrap: wrap; }

/* Featured */
.featured { padding: 2rem 0; }
.section-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.section-title { font-size: 1.25rem; font-weight: 700; }
.section-link { color: var(--color-primary); font-weight: 500; font-size: 0.875rem; }
.featured-card { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; background: var(--color-white); border-radius: 12px; overflow: hidden; box-shadow: var(--shadow-md); }
.featured-image { position: relative; min-height: 280px; }
.featured-image img { width: 100%; height: 100%; object-fit: cover; position: absolute; top: 0; left: 0; }
.featured-content { padding: 1.5rem; display: flex; flex-direction: column; justify-content: center; }
.featured-category { display: inline-block; padding: 0.25rem 0.75rem; background: var(--color-primary); color: var(--color-white); font-size: 0.75rem; font-weight: 600; border-radius: 20px; text-transform: uppercase; margin-bottom: 0.75rem; width: fit-content; }
.featured-title { font-size: 1.25rem; font-weight: 700; margin-bottom: 0.75rem; line-height: 1.3; }
.featured-title a { color: var(--color-text); }
.featured-title a:hover { color: var(--color-primary); }
.featured-excerpt { color: var(--color-text-secondary); margin-bottom: 1rem; line-height: 1.6; font-size: 0.9375rem; }
.featured-meta { display: flex; align-items: center; gap: 1rem; font-size: 0.8125rem; color: var(--color-text-muted); }
.featured-author { display: flex; align-items: center; gap: 0.5rem; }
.featured-author img { width: 32px; height: 32px; border-radius: 50%; }

/* Articles */
.articles-section { padding: 2rem 0; }
.content-grid { display: grid; grid-template-columns: 1fr var(--sidebar-width); gap: 2rem; }
.articles-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
.article-card { background: var(--color-white); border-radius: 10px; overflow: hidden; box-shadow: var(--shadow-sm); transition: all 0.25s; }
.article-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }
/* 文章卡片内容区域样式修复 */
.article-card .article-content { padding: 1rem; }
.article-card .article-meta { margin-bottom: 0.5rem; }
.article-card .article-footer { display: flex; align-items: center; justify-content: space-between; margin-top: 0.75rem; padding-top: 0.75rem; border-top: 1px solid var(--color-gray-100); }
.article-card .article-views { display: flex; align-items: center; gap: 0.25rem; font-size: 0.75rem; color: var(--color-text-muted); }
.article-card .article-read-more { font-size: 0.8125rem; color: var(--color-primary); font-weight: 500; }

.article-image { display: block; position: relative; width: 100%; height: 0; padding-bottom: 56.25%; overflow: hidden; }
.article-image img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; }
.article-image img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.35s; }
.article-card:hover .article-image img { transform: scale(1.05); }
.article-body { padding: 1rem; }
.article-category { display: inline-block; padding: 2px 8px; background: var(--color-light); color: var(--color-primary); font-size: 0.75rem; font-weight: 600; border-radius: 20px; margin-bottom: 0.5rem; }
.article-title { font-size: 1rem; font-weight: 700; margin-bottom: 0.5rem; line-height: 1.4; }
.article-title a { color: var(--color-text); }
.article-title a:hover { color: var(--color-primary); }
.article-excerpt { font-size: 0.8125rem; color: var(--color-text-secondary); margin-bottom: 0.75rem; line-height: 1.5; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.article-meta { display: flex; align-items: center; justify-content: space-between; font-size: 0.75rem; color: var(--color-text-muted); }
.article-author { display: flex; align-items: center; gap: 0.5rem; }
.article-author img { width: 24px; height: 24px; border-radius: 50%; }

/* Sidebar */
.sidebar { display: flex; flex-direction: column; gap: 1.5rem; }
.sidebar-widget { background: var(--color-white); border-radius: 10px; padding: 1rem; box-shadow: var(--shadow-sm); }
.widget-title { font-size: 0.9375rem; font-weight: 700; margin-bottom: 0.75rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--color-primary); }
.widget-list { list-style: none; }
.widget-list li { padding: 0.5rem 0; border-bottom: 1px solid var(--color-gray-100); }
.widget-list li:last-child { border-bottom: none; }
.widget-list a { display: flex; justify-content: space-between; align-items: center; color: var(--color-text); font-size: 0.875rem; }
.widget-list a:hover { color: var(--color-primary); }
.widget-count { background: var(--color-light); color: var(--color-text-muted); padding: 2px 8px; border-radius: 20px; font-size: 0.75rem; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-link { display: inline-block; padding: 0.25rem 0.75rem; background: var(--color-light); color: var(--color-text); font-size: 0.8125rem; border-radius: 20px; }
.tag-link:hover { background: var(--color-primary); color: var(--color-white); }

/* Article Single */
.article-header { margin-bottom: 1.5rem; }
.article-header h1 { font-size: 2rem; margin-bottom: 0.75rem; line-height: 1.3; }
.article-meta-full { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem; font-size: 0.8125rem; color: var(--color-text-muted); margin-bottom: 1.5rem; }
.article-meta-full .author-info { display: flex; align-items: center; gap: 0.5rem; }
.article-meta-full .author-avatar { width: 40px; height: 40px; border-radius: 50%; }
.article-meta-full .author-name { font-weight: 600; color: var(--color-text); }
.article-featured-image { border-radius: 12px; overflow: hidden; margin-bottom: 1.5rem; }
.article-featured-image img { width: 100%; height: auto; }
.article-content { font-size: 1rem; line-height: 1.8; }
.article-content h2 { margin-top: 2rem; margin-bottom: 1rem; }
.article-content h3 { margin-top: 1.5rem; margin-bottom: 0.75rem; }
.article-content p { margin-bottom: 1rem; }
.article-content ul, .article-content ol { margin-bottom: 1rem; padding-left: 1.5rem; }
.article-content li { margin-bottom: 0.5rem; }
.article-content blockquote { margin: 1.5rem 0; padding: 1rem 1.5rem; background: var(--color-light); border-left: 4px solid var(--color-primary); border-radius: 0 6px 6px 0; font-style: italic; }
.article-content pre { background: var(--color-gray-900); color: var(--color-gray-100); padding: 1rem; border-radius: 6px; overflow-x: auto; margin: 1rem 0; }
.article-content code { font-family: monospace; font-size: 0.875em; }
.article-content img { border-radius: 6px; margin: 1rem 0; }
.article-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; padding-top: 1.5rem; border-top: 1px solid var(--color-gray-200); }
.article-tags .tag-label { font-weight: 600; margin-right: 0.5rem; }
.author-card { display: flex; gap: 1rem; padding: 1.5rem; background: var(--color-white); border-radius: 10px; margin-top: 2rem; box-shadow: var(--shadow-sm); }
.author-card .author-avatar { width: 64px; height: 64px; border-radius: 50%; flex-shrink: 0; }
.author-card .author-info h4 { font-size: 1rem; margin-bottom: 0.25rem; }
.author-card .author-bio { font-size: 0.875rem; color: var(--color-text-secondary); margin: 0; }

/* Comments */
.comments-section { margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--color-gray-200); }
.comments-title { font-size: 1.125rem; font-weight: 700; margin-bottom: 1.5rem; }
.comment-form { background: var(--color-white); padding: 1rem; border-radius: 10px; margin-bottom: 1.5rem; box-shadow: var(--shadow-sm); }
.comment-form textarea { width: 100%; min-height: 100px; padding: 0.75rem; border: 1px solid var(--color-gray-200); border-radius: 6px; font-family: var(--font-sans); font-size: 0.875rem; resize: vertical; margin-bottom: 0.75rem; }
.comment-form textarea:focus { outline: none; border-color: var(--color-primary); }
.comment-list { display: flex; flex-direction: column; gap: 1rem; }
.comment-item { display: flex; gap: 0.75rem; padding: 1rem; background: var(--color-white); border-radius: 10px; box-shadow: var(--shadow-sm); }
.comment-avatar { width: 40px; height: 40px; border-radius: 50%; flex-shrink: 0; }
.comment-content { flex: 1; }
.comment-header { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.5rem; }
.comment-author { font-weight: 600; }
.comment-date { font-size: 0.75rem; color: var(--color-text-muted); }
.comment-text { font-size: 0.875rem; color: var(--color-text-secondary); margin: 0; }

/* Pagination */
.pagination { display: flex; justify-content: center; align-items: center; gap: 0.5rem; margin-top: 2rem; flex-wrap: wrap; }
.pagination a, .pagination span { display: inline-flex; align-items: center; justify-content: center; min-width: 36px; height: 36px; padding: 0 0.75rem; border: 1px solid var(--color-gray-200); border-radius: 6px; font-size: 0.875rem; color: var(--color-text); }
.pagination a:hover { background: var(--color-light); border-color: var(--color-gray-300); }
.pagination .current { background: var(--color-primary); border-color: var(--color-primary); color: var(--color-white); }
.pagination .disabled { color: var(--color-gray-400); cursor: not-allowed; }

/* Category & Tag Pages */
.category-header, .tag-header { padding: 2rem 0; background: var(--color-white); margin-bottom: 1.5rem; border-bottom: 1px solid var(--color-gray-200); }
.category-header h1, .tag-header h1 { font-size: 1.75rem; margin-bottom: 0.5rem; }
.category-desc, .tag-desc { color: var(--color-text-secondary); font-size: 1rem; }

/* Search */
.search-header { padding: 2rem 0; text-align: center; }
.search-header h1 { font-size: 1.75rem; margin-bottom: 1rem; }
.search-form-large { max-width: 500px; margin: 0 auto; display: flex; gap: 0.5rem; }
.search-form-large input { flex: 1; padding: 0.75rem; border: 2px solid var(--color-gray-200); border-radius: 6px; font-size: 1rem; }
.search-form-large input:focus { outline: none; border-color: var(--color-primary); }

/* Footer */
.footer { background: var(--color-gray-900); color: var(--color-gray-300); padding: 2rem 0 1rem; margin-top: 3rem; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 2rem; margin-bottom: 1.5rem; }
.footer-brand .logo { margin-bottom: 0.75rem; }
.footer-brand .logo-icon { background: var(--color-primary); }
.footer-brand .logo-text { color: var(--color-white); }
.footer-brand p { font-size: 0.875rem; line-height: 1.6; margin-bottom: 0.75rem; }
.social-links { display: flex; gap: 0.5rem; }
.social-links a { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; background: var(--color-gray-800); border-radius: 6px; color: var(--color-gray-400); }
.social-links a:hover { background: var(--color-primary); color: var(--color-white); }
.footer-links h4 { color: var(--color-white); font-size: 0.9375rem; font-weight: 600; margin-bottom: 0.75rem; }
.footer-links ul { list-style: none; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: var(--color-gray-400); font-size: 0.875rem; }
.footer-links a:hover { color: var(--color-white); }
.footer-newsletter h4 { color: var(--color-white); font-size: 0.875rem; font-weight: 700; margin-bottom: 0.5rem; }
.footer-newsletter p { font-size: 0.8125rem; color: var(--color-gray-400); margin-bottom: 0.75rem; }
.newsletter-form { display: flex; gap: 0.5rem; }
.newsletter-form input { flex: 1; padding: 0.5rem 0.75rem; border: 1px solid var(--color-gray-700); border-radius: 6px; font-size: 0.8125rem; background: var(--color-gray-800); color: var(--color-white); }
.newsletter-form input:focus { outline: none; border-color: var(--color-primary); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 1rem; border-top: 1px solid var(--color-gray-800); font-size: 0.75rem; color: var(--color-gray-500); }

/* Back to Top */
.back-to-top { position: fixed; bottom: 1.5rem; right: 1.5rem; width: 44px; height: 44px; border: none; border-radius: 50%; background: var(--color-primary); color: var(--color-white); cursor: pointer; opacity: 0; visibility: hidden; transform: translateY(20px); transition: all 0.25s; z-index: 50; box-shadow: var(--shadow-lg); }
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

/* Empty State */
.empty-state { text-align: center; padding: 3rem; color: var(--color-text-muted); }
.empty-state svg { margin-bottom: 1rem; opacity: 0.5; }

/* Utilities */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }

/* ============================================
   RESPONSIVE
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
  .content-grid { grid-template-columns: 1fr; }
  .sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1rem; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}

/* Mobile */
@media (max-width: 768px) {
  :root { --header-height: 56px; }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.375rem; }
  h3 { font-size: 1.125rem; }
  
  .container { padding: 0 0.75rem; }
  
  /* Header */
  .nav-menu, .nav-actions { display: none !important; }
  .mobile-menu-btn { display: flex !important; }
  
  /* Mobile Menu */
  .nav-menu.active {
    display: flex !important;
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    padding: 1rem;
    overflow-y: auto;
    z-index: 99;
    gap: 0;
  }
  
  .nav-menu.active li { width: 100%; border-bottom: 1px solid var(--color-gray-100); }
  .nav-menu.active .nav-link { display: flex; justify-content: space-between; padding: 1rem; font-size: 1rem; }
  
  .nav-menu.active .nav-dropdown .dropdown-menu {
    display: none;
    position: static;
    box-shadow: none;
    border: none;
    background: var(--color-light);
    border-radius: 0;
    padding: 0;
    margin: 0;
  }
  
  .nav-menu.active .nav-dropdown.open .dropdown-menu { display: block; }
  .nav-menu.active .nav-dropdown.open .icon-down { transform: rotate(180deg); }
  .nav-menu.active .dropdown-menu a { padding: 0.75rem 1.5rem; font-size: 0.9375rem; }
  
  /* Hero */
  .hero { padding: 2rem 0; }
  .hero-title { font-size: 1.75rem; }
  .hero-desc { font-size: 0.9375rem; }
  .hero-actions { flex-direction: column; width: 100%; padding: 0 1rem; }
  .hero-actions .btn { width: 100%; }
  
  /* Featured */
  .featured { padding: 1.5rem 0; }
  .featured-card { grid-template-columns: 1fr; gap: 0; }
  .featured-image { min-height: 200px; }
  .featured-content { padding: 1rem; }
  .featured-title { font-size: 1.125rem; }
  
  /* Articles */
  .articles-section { padding: 1.5rem 0; }
  .articles-grid { grid-template-columns: 1fr; gap: 1rem; }
  .article-body { padding: 0.875rem; }
  .article-card .article-content { padding: 0.875rem; }
  .article-title { font-size: 0.9375rem; }
  
  /* Sidebar */
  .sidebar { grid-template-columns: 1fr; }
  
  /* Article Single */
  .article-header h1 { font-size: 1.5rem; }
  .article-meta-full { font-size: 0.75rem; }
  .article-content { font-size: 0.9375rem; }
  .author-card { flex-direction: column; text-align: center; }
  .author-card .author-avatar { margin: 0 auto; }
  
  /* Comments */
  .comment-item { flex-direction: column; }
  .comment-avatar { margin-bottom: 0.5rem; }
  
  /* Footer */
  .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
  .footer-bottom { flex-direction: column; gap: 0.5rem; text-align: center; }
  
  /* Pagination */
  .pagination a, .pagination span { min-width: 32px; height: 32px; font-size: 0.8125rem; }
  
  /* Search */
  .search-form-large { flex-direction: column; }
  .search-form-large input, .search-form-large button { width: 100%; }
  
  /* Newsletter */
  .newsletter-form { flex-direction: column; }
  .newsletter-form input, .newsletter-form button { width: 100%; }
}

/* Small Mobile */
@media (max-width: 480px) {
  .container { padding: 0 0.5rem; }
  .hero-title { font-size: 1.5rem; }
  .article-header h1 { font-size: 1.25rem; }
}

/* Touch */
@media (hover: none) and (pointer: coarse) {
  .nav-dropdown:hover .dropdown-menu { display: none; }
  .nav-dropdown.open .dropdown-menu { display: block; }
  .article-card:hover { transform: none; }
  .article-card:active { transform: scale(0.98); }
}