:root{--primary:#111;--accent:#0073aa;--bg:#ffffff;--text:#333333;--meta:#666666;--border:#eeeeee;--container:800px}html[data-theme="dark"]{--bg:#0f1115;--text:#f1f5f9;--meta:#94a3b8;--border:#1f2933;--primary:#f9fafb;--accent:#38bdf8}*{box-sizing:border-box}html,body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Oxygen-Sans,Ubuntu,Cantarell,"Helvetica Neue",sans-serif;background:var(--bg);color:var(--text);line-height:1.6;font-size:18px}a{text-decoration:none;color:var(--primary)}a:hover{color:var(--accent)}img{max-width:100%;height:auto;border-radius:8px;display:block}.container{max-width:var(--container);margin:0 auto;padding:20px}.skip-link{position:absolute;left:-999px;top:10px;background:#000;color:#fff;padding:10px 15px;z-index:10000}.skip-link:focus{left:10px}.site-header{position:sticky;top:0;z-index:999;background:rgba(var(--bg-rgb,255,255,255),0.96);backdrop-filter:blur(12px);border-bottom:1px solid var(--border);transition:transform 0.25s ease,box-shadow 0.25s ease}html[data-theme="dark"] .site-header{background:rgba(15,17,21,0.96)}.site-header.is-hidden{transform:translateY(-100%)}.site-header .header-inner{display:flex;align-items:center;justify-content:space-between;gap:20px;padding:15px 20px}.site-branding a{font-weight:800;font-size:1.4rem}nav ul{list-style:none;padding:0;margin:0;display:flex;flex-wrap:wrap;gap:18px;justify-content:flex-end}nav li{margin:0}.theme-toggle{border:1px solid var(--border);background:transparent;border-radius:999px;padding:6px 12px;font-size:0.9rem;cursor:pointer}h1{font-size:2.2rem;font-weight:800;line-height:1.2;margin-bottom:10px}h2{font-size:1.6rem;margin-top:40px}h3{font-size:1.3rem}.post-meta{font-size:0.9rem;color:var(--meta);margin-bottom:15px;display:flex;flex-wrap:wrap;gap:10px}.breadcrumbs{font-size:0.85rem;color:var(--meta);margin-bottom:10px}.breadcrumbs a{color:var(--meta)}.breadcrumbs a:hover{color:var(--accent)}.reading-time{display:inline-flex;align-items:center;padding:3px 8px;border-radius:999px;background:#f3f4f6;color:var(--meta);font-size:0.8rem;margin-left:5px}html[data-theme="dark"] .reading-time{background:#111827}#reading-progress{position:fixed;top:0;left:0;height:4px;background:var(--accent);z-index:10000;width:0%;transition:width 0.1s ease}.toc{background:#f9f9f9;border:1px solid var(--border);padding:20px;margin:30px 0;border-radius:8px}html[data-theme="dark"] .toc{background:#020617;border-color:#1e293b}.toc h3{margin-top:0;font-size:1.1rem}.toc ul{margin:0;padding-left:20px}.toc li{margin-bottom:5px}.author-box{background:#f4f6f8;padding:25px;border-radius:12px;margin-top:50px;display:flex;align-items:center;gap:20px}html[data-theme="dark"] .author-box{background:#020617}.author-box img{width:80px;height:80px;border-radius:50%}.related-posts{margin-top:40px;padding-top:20px;border-top:1px solid var(--border)}.related-posts ul{list-style:none;padding:0}.related-posts li{margin-bottom:10px;font-weight:bold}.related-posts a{color:var(--primary)}.related-posts a:hover{color:var(--accent)}.social-share{margin:20px 0 25px;display:flex;flex-wrap:wrap;gap:10px}.social-share span.label{font-size:0.9rem;color:var(--meta);margin-right:5px}.social-share a.button-share{display:inline-flex;align-items:center;justify-content:center;padding:6px 12px;border-radius:999px;font-size:0.85rem;border:1px solid var(--border)}.btn-shortcode{display:inline-block;padding:10px 18px;border-radius:999px;background:var(--accent);color:#fff!important;font-weight:600;font-size:0.95rem}.btn-shortcode:hover{opacity:0.9}.alert-shortcode{padding:12px 16px;border-radius:8px;margin:15px 0;border:1px solid var(--border);background:#fefce8}html[data-theme="dark"] .alert-shortcode{background:#1e293b}.google-news-cta{margin-top:40px;padding:20px;border-radius:10px;border:1px dashed var(--border);text-align:center;font-size:0.95rem}#back-to-top{position:fixed;right:15px;bottom:15px;padding:10px 13px;border-radius:999px;border:none;background:var(--accent);color:#fff;cursor:pointer;font-size:0.85rem;display:none;z-index:9999}.comments-lazy{margin-top:40px}#load-comments-btn{padding:10px 18px;border-radius:999px;border:1px solid var(--border);background:transparent;cursor:pointer}.comments-inner{display:none}footer{text-align:center;padding:40px 0;font-size:0.85rem;color:#888;border-top:1px solid var(--border);margin-top:50px}.error-404{text-align:center}.error-404 h1{font-size:2rem}.error-404 .recent-posts-404{margin-top:30px;text-align:left}
.tools-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 25px; }
.tool-card { 
    display: block; 
    border: 1px solid var(--border); 
    padding: 25px; 
    border-radius: 12px; 
    background: var(--bg); 
    transition: transform 0.2s, box-shadow 0.2s;
}
.tool-card:hover { 
    transform: translateY(-5px); 
    box-shadow: 0 10px 20px rgba(0,0,0,0.08); 
    border-color: var(--accent); 
}
.tool-card h2 { margin-top: 0; font-size: 1.4rem; color: var(--text); }
.tool-interface-wrapper {
    background: var(--bg);
    border: 1px solid var(--border);
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
    margin-bottom: 50px;
}
html[data-theme="dark"] .tool-interface-wrapper { background: #151921; border-color: #333; }