.theme-toggle{background:none;border:none;cursor:pointer;padding:6px;border-radius:8px;color:var(--fg,#0f172a);display:flex;align-items:center;justify-content:center;transition:background 0.2s}.theme-toggle:hover{background:var(--ct-bg-soft,#f3f6f9)}.theme-toggle .icon-moon{display:none}html[data-theme="dark"] .theme-toggle .icon-sun{display:none}html[data-theme="dark"] .theme-toggle .icon-moon{display:block}.header-actions{display:flex;align-items:center;gap:4px}.search-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,0.6);backdrop-filter:blur(8px);z-index:9999;display:none;align-items:flex-start;justify-content:center;padding-top:120px}.search-overlay.active{display:flex}.search-overlay-inner{background:var(--ct-card,#fff);border-radius:16px;padding:32px;width:90%;max-width:640px;box-shadow:0 20px 60px rgba(0,0,0,0.3);position:relative}.search-close{position:absolute;top:12px;right:16px;background:none;border:none;font-size:28px;cursor:pointer;color:var(--muted);line-height:1}.search-overlay-form{display:flex;gap:8px}.search-overlay-form input{flex:1;padding:14px 18px;border:2px solid var(--ct-border,#e3e9f0);border-radius:12px;font-size:16px;background:var(--ct-bg-soft,#f3f6f9);color:var(--ct-text,#0f172a);outline:none}.search-overlay-form input:focus{border-color:var(--ct-primary,#06b6d4)}.search-overlay-form button{padding:14px 24px;background:var(--ct-grad,linear-gradient(135deg,#06b6d4,#3b82f6));color:#fff;border:none;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer;white-space:nowrap}.search-suggestions{margin-top:16px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.search-sug-label{font-size:13px;color:var(--muted);margin-right:4px}.search-sug-tag{padding:4px 12px;background:var(--ct-bg-soft,#f3f6f9);border-radius:20px;font-size:13px;color:var(--ct-text-soft,#5b6677);text-decoration:none;transition:all 0.2s}.search-sug-tag:hover{background:var(--ct-primary,#06b6d4);color:#fff}.search-results{margin-top:16px;max-height:300px;overflow-y:auto}.cat-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:24px}.cat-tab{padding:8px 18px;border:1.5px solid var(--ct-border,#e3e9f0);border-radius:24px;background:transparent;color:var(--ct-text-soft,#5b6677);font-size:14px;cursor:pointer;transition:all 0.25s;font-weight:500}.cat-tab:hover{border-color:var(--ct-primary,#06b6d4);color:var(--ct-primary,#06b6d4)}.cat-tab.active{background:var(--ct-grad,linear-gradient(135deg,#06b6d4,#3b82f6));color:#fff;border-color:transparent}.cat-tab-content{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px}.cat-tab-content .grid-card{background:var(--ct-card,#fff);border:1px solid var(--ct-border,#e3e9f0);border-radius:14px;overflow:hidden;transition:transform 0.2s,box-shadow 0.2s}.cat-tab-content .grid-card:hover{transform:translateY(-2px);box-shadow:var(--ct-shadow,0 4px 16px rgba(0,0,0,0.06))}.footer-main{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr 1fr;gap:32px;padding-bottom:32px;border-bottom:1px solid var(--ct-border,#e3e9f0)}.footer-brand p{margin-top:12px;line-height:1.6}.footer-social{display:flex;gap:12px;margin-top:16px}.footer-social a{width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:8px;background:var(--ct-bg-soft,#f3f6f9);color:var(--ct-text-soft,#5b6677);transition:all 0.2s}.footer-social a:hover{background:var(--ct-primary,#06b6d4);color:#fff}@media (max-width:768px){.footer-main{grid-template-columns:1fr 1fr}}html[data-theme="dark"]{--ct-bg:#0f172a;--ct-bg-soft:#1e293b;--ct-card:#1e293b;--ct-border:#334155;--ct-text:#f1f5f9;--ct-text-soft:#94a3b8;--ct-code-bg:#1e293b;--ct-code-text:#e2e8f0;--ct-shadow:0 1px 2px rgba(0,0,0,0.3),0 10px 30px rgba(0,0,0,0.2)}html[data-theme="dark"] .site-header{background:rgba(15,23,42,0.95);border-bottom-color:#334155}html[data-theme="dark"] .search-overlay-inner{background:#1e293b}html[data-theme="dark"] .cat-tab{border-color:#334155;color:#94a3b8}html[data-theme="dark"] .cat-tab:hover{border-color:#22d3ee;color:#22d3ee}html[data-theme="dark"] .feature-card,html[data-theme="dark"] .ai-sm-card,html[data-theme="dark"] .ai-lead-card,html[data-theme="dark"] .testimonial-card,html[data-theme="dark"] .trend-card,html[data-theme="dark"] .cta-card,html[data-theme="dark"] .newsletter-card,html[data-theme="dark"] .author-home-card{background:#1e293b;border-color:#334155}html[data-theme="dark"] .full-bleed-light{background:#0f172a}html[data-theme="dark"] .tech-strip{background:#1e293b}html[data-theme="dark"] .newsletter-bleed{background:linear-gradient(135deg,#0c1624 0%,#1a1040 100%)}html[data-theme="dark"] .site-footer{background:#0a0f1a;border-top-color:#334155}#back-to-top:hover{transform:translateY(-2px) !important;box-shadow:0 6px 20px rgba(6,182,212,0.4)}#reading-progress{pointer-events:none}@media (max-width:768px){.main-nav{display:none}.main-nav.mobile-open{display:flex !important}.site-header .header-inner{position:relative}}.reveal{opacity:0;transform:translateY(20px);transition:opacity 0.6s ease,transform 0.6s ease}.reveal.revealed{opacity:1;transform:translateY(0)}.reveal-delay-1{transition-delay:0.1s}.reveal-delay-2{transition-delay:0.2s}.reveal-delay-3{transition-delay:0.3s}.reveal-delay-4{transition-delay:0.4s}html{scroll-behavior:smooth}.article-body h2,.article-body h3{scroll-margin-top:80px}::selection{background:rgba(6,182,212,0.2)}:focus-visible{outline:2px solid var(--ct-primary,#06b6d4);outline-offset:2px;border-radius:4px}@media print{.site-header,.site-footer,.site-sidebar,.sub-nav-bar,.ai-ticker-bar,.home-stats,.tech-strip,.newsletter-bleed,.newsletter-card,#back-to-top,#reading-progress{display:none !important}.site-content{max-width:100%}.content-area{width:100%}}.social-share-bar{display:flex;align-items:center;gap:10px;padding:16px 0;margin:20px 0;border-top:1px solid var(--border,#e2e8f0);flex-wrap:wrap}.share-label{font-size:14px;color:var(--muted,#64748b);font-weight:600}.share-btn{display:inline-block;padding:6px 16px;border-radius:6px;font-size:13px;font-weight:600;text-decoration:none;cursor:pointer;transition:opacity .2s}.share-btn:hover{opacity:.8}.share-btn.wechat{background:#07c160;color:#fff}.share-btn.weibo{background:#e6162d;color:#fff}.share-btn.twitter{background:#1da1f2;color:#fff}.share-btn.copy{background:var(--card,#f1f5f9);color:var(--fg,#1e293b);border:1px solid var(--border,#e2e8f0)}.skeleton{background:linear-gradient(90deg,var(--card,#f1f5f9) 25%,var(--border,#e2e8f0) 50%,var(--card,#f1f5f9) 75%);background-size:200% 100%;animation:skeleton-loading 1.5s ease-in-out infinite;border-radius:6px}@keyframes skeleton-loading{0%{background-position:200% 0}100%{background-position:-200% 0}}.skeleton-card{padding:20px;margin-bottom:16px;border:1px solid var(--border,#e2e8f0);border-radius:8px}.skeleton-title{height:20px;width:70%;margin-bottom:12px}.skeleton-text{height:14px;width:100%;margin-bottom:8px}.skeleton-text.short{width:60%}.skeleton-img{height:140px;width:100%;margin-bottom:12px}#reading-progress{height:4px;background:linear-gradient(90deg,#06b6d4,#6366f1,#a855f7);box-shadow:0 0 8px rgba(99,102,241,0.4);border-radius:0 2px 2px 0}html[data-theme="dark"] .social-share-bar{border-top-color:#334155}html[data-theme="dark"] .share-btn.copy{background:#334155;color:#e2e8f0;border-color:#475569}html[data-theme="dark"] .error-404-page{color:#e2e8f0}html[data-theme="dark"] .error-search-input{background:#1e293b;color:#e2e8f0}html[data-theme="dark"] .error-popular-list a{background:#1e293b}html[data-theme="dark"] .error-popular-list a:hover{background:#334155}html[data-theme="dark"] .skeleton{background:linear-gradient(90deg,#1e293b 25%,#334155 50%,#1e293b 75%);background-size:200% 100%}