body.dark{
  --bg:#0F172A;--bg-card:#1E293B;--text:#F1F5F9;--muted:#94A3B8;--border:#334155;
  --shadow:0 10px 30px -10px rgba(0,0,0,.5);--shadow-lg:0 20px 50px -20px rgba(0,0,0,.7);
}
body.dark .site-header{background:rgba(15,23,42,.85);border-bottom-color:#1e293b}
body.dark .logo,body.dark .main-nav a{color:#F1F5F9}
body.dark .main-nav{background:#0F172A}
body.dark .header-search,body.dark .theme-toggle,body.dark .menu-toggle{background:#1E293B;border-color:#334155;color:#F1F5F9}
body.dark .hero-card,body.dark .card,body.dark .article-card,body.dark .bank-card,body.dark .faq-item,body.dark .post-content,body.dark .sidebar .widget,body.dark .toc,body.dark .author-box{background:#1E293B;border-color:#334155;color:#F1F5F9}
body.dark .chip{background:#1E293B;border-color:#334155;color:#94A3B8}
body.dark .hero-search{background:#1E293B;border-color:#334155}
body.dark .hero-search input{color:#F1F5F9}
body.dark .form-group input,body.dark .form-group textarea,body.dark .form-group select{background:#1E293B;border-color:#334155;color:#F1F5F9}
body.dark .post-content th{background:#0F172A}
body.dark .section-head .eyebrow{background:rgba(37,99,235,.2)}
body.dark .post-content blockquote{background:rgba(37,99,235,.15)}
body.dark .post-content .warning{background:rgba(245,158,11,.15);color:#FCD34D}
body.dark .post-content .tip{background:rgba(22,163,74,.15);color:#86EFAC}
body.dark .share a,body.dark .pagination a,body.dark .pagination span{color:#F1F5F9;border-color:#334155}