* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif; color: #333; line-height: 1.7; background: #f8f9fa; }
        a { color: #155DFC; text-decoration: none; }
        a:hover { text-decoration: underline; }

        /* Header */
        .site-header { background: #1a1a2e; padding: 18px 0; position: sticky; top: 0; z-index: 100; box-shadow: 0 2px 10px rgba(0,0,0,0.3); }
        .header-inner { max-width: 1100px; margin: 0 auto; padding: 0 20px; display: flex; align-items: center; justify-content: space-between; }
        .logo { color: #fff; font-size: 1.5rem; font-weight: 800; letter-spacing: -0.5px; }
        .logo span { color: #155DFC; }
        .nav-links a { color: #ccc; margin-left: 24px; font-size: 0.95rem; transition: color 0.2s; }
        .nav-links a:hover { color: #fff; text-decoration: none; }

        /* Article Container */
        .article-container { max-width: 780px; margin: 0 auto; padding: 40px 20px 60px; }

        /* FTC Disclosure */
        .ftc-disclosure { background: #fff3cd; border: 1px solid #ffc107; border-radius: 8px; padding: 14px 18px; margin-bottom: 32px; font-size: 0.85rem; color: #664d03; line-height: 1.5; }

        /* Breadcrumb */
        .breadcrumb { font-size: 0.85rem; color: #888; margin-bottom: 20px; }
        .breadcrumb a { color: #155DFC; }

        /* Article Header */
        .article-header h1 { font-size: 2.1rem; line-height: 1.25; color: #1a1a2e; margin-bottom: 16px; font-weight: 800; }
        .article-meta { display: flex; gap: 20px; flex-wrap: wrap; font-size: 0.88rem; color: #777; margin-bottom: 28px; padding-bottom: 20px; border-bottom: 2px solid #eee; }
        .article-meta span { display: flex; align-items: center; gap: 5px; }

        /* Content */
        .article-content h2 { font-size: 1.55rem; color: #1a1a2e; margin: 40px 0 16px; padding-top: 12px; border-top: 1px solid #eee; font-weight: 700; }
        .article-content h2:first-of-type { border-top: none; margin-top: 8px; }
        .article-content h3 { font-size: 1.2rem; color: #333; margin: 28px 0 12px; font-weight: 600; }
        .article-content p { margin-bottom: 16px; font-size: 1.02rem; }
        .article-content ul, .article-content ol { margin: 0 0 20px 24px; }
        .article-content li { margin-bottom: 8px; font-size: 1.02rem; }

        /* Screenshot images */
        .screenshot-img { width: 100%; border-radius: 8px; margin: 20px 0 28px; box-shadow: 0 2px 12px rgba(0,0,0,0.1); border: 1px solid #e5e7eb; }

        /* CTA Box */
        .cta-box { background: linear-gradient(135deg, #155DFC 0%, #1a1a2e 100%); border-radius: 12px; padding: 28px 32px; margin: 32px 0; text-align: center; color: #fff; }
        .cta-box h3 { color: #fff; font-size: 1.3rem; margin-bottom: 10px; }
        .cta-box p { color: rgba(255,255,255,0.9); margin-bottom: 18px; font-size: 0.98rem; }
        .cta-button { display: inline-block; background: #fff; color: #155DFC; padding: 13px 36px; border-radius: 8px; font-weight: 700; font-size: 1.05rem; transition: transform 0.2s, box-shadow 0.2s; }
        .cta-button:hover { transform: translateY(-2px); box-shadow: 0 4px 15px rgba(0,0,0,0.3); text-decoration: none; }

        /* Tip Box */
        .tip-box { background: #e8f4fd; border-left: 4px solid #155DFC; border-radius: 0 8px 8px 0; padding: 16px 20px; margin: 20px 0; }
        .tip-box strong { color: #155DFC; }

        /* Warning Box */
        .warning-box { background: #fff3cd; border-left: 4px solid #ffc107; border-radius: 0 8px 8px 0; padding: 16px 20px; margin: 20px 0; }

        /* Pricing Table */
        .pricing-table { width: 100%; border-collapse: collapse; margin: 20px 0 28px; font-size: 0.95rem; }
        .pricing-table th { background: #1a1a2e; color: #fff; padding: 12px 16px; text-align: left; }
        .pricing-table td { padding: 11px 16px; border-bottom: 1px solid #eee; }
        .pricing-table tr:nth-child(even) { background: #f8f9fa; }
        .pricing-table .highlight-row { background: #e8f0ff; font-weight: 600; }

        /* FAQ */
        .faq-item { border: 1px solid #e0e0e0; border-radius: 8px; margin-bottom: 12px; overflow: hidden; }
        .faq-question { background: #f8f9fa; padding: 16px 20px; font-weight: 600; font-size: 1.05rem; cursor: default; color: #1a1a2e; }
        .faq-answer { padding: 16px 20px; font-size: 0.98rem; border-top: 1px solid #e0e0e0; }

        /* Troubleshooting */
        .troubleshoot-item { margin-bottom: 18px; }
        .troubleshoot-item strong { color: #c0392b; }
        .troubleshoot-item em { color: #155DFC; font-style: normal; font-weight: 600; }

        /* TOC */
        .toc { background: #fff; border: 1px solid #ddd; border-radius: 10px; padding: 22px 28px; margin-bottom: 32px; }
        .toc h3 { font-size: 1.1rem; margin-bottom: 12px; color: #1a1a2e; }
        .toc ol { margin: 0; padding-left: 20px; }
        .toc li { margin-bottom: 6px; font-size: 0.95rem; }
        .toc a { color: #155DFC; }

        /* Footer */
        .site-footer { background: #1a1a2e; color: #aaa; padding: 36px 20px; text-align: center; font-size: 0.88rem; }
        .site-footer a { color: #155DFC; }
        .footer-inner { max-width: 1100px; margin: 0 auto; }

        /* Table scroll wrapper */
        .table-scroll-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; margin: 20px 0 28px; }

        /* Key Takeaway box */
        .key-takeaway { background: linear-gradient(135deg, #ecfdf5, #f0fdf4); border: 1px solid #86efac; border-radius: 10px; padding: 20px 24px; margin: 24px 0; }
        .key-takeaway .label { font-weight: 700; font-size: 14px; color: #059669; text-transform: uppercase; letter-spacing: 0.5px; margin: 0 0 8px; }
        .key-takeaway p { font-size: 16px; line-height: 1.6; margin: 0; color: #1a1a2e; }

        /* What You'll Learn box */
        .what-youll-learn { background: #f0f4ff; border: 1px solid #c5d5ff; border-radius: 10px; padding: 20px 24px; margin: 24px 0; }
        .what-youll-learn h3 { font-size: 16px; font-weight: 700; color: #1a1a2e; margin: 0 0 4px; }
        .what-youll-learn .est-time { font-size: 13px; color: #777; margin: 0 0 12px; }
        .what-youll-learn ul { margin: 0; padding-left: 20px; }
        .what-youll-learn li { font-size: 15px; margin-bottom: 6px; color: #333; }

        /* Sticky mobile CTA bar */
        .sticky-mobile-cta { display: none; position: fixed; bottom: 0; left: 0; right: 0; background: #155DFC; padding: 12px 20px; z-index: 999; text-align: center; box-shadow: 0 -4px 16px rgba(0,0,0,0.15); }
        .sticky-mobile-cta a { display: block; color: #fff; font-weight: 700; font-size: 16px; text-decoration: none; padding: 14px 0; background: rgba(255,255,255,0.15); border-radius: 8px; min-height: 48px; line-height: 20px; }
        .sticky-mobile-cta a:hover { background: rgba(255,255,255,0.25); text-decoration: none; }

        /* Responsive */
        @media (max-width: 640px) {
            .article-header h1 { font-size: 1.55rem; }
            .article-content h2 { font-size: 1.3rem; }
            .header-inner { flex-direction: column; gap: 10px; }
            .nav-links { display: flex; gap: 16px; }
            .nav-links a { margin-left: 0; }
            .cta-box { padding: 22px 18px; }
            .pricing-table { font-size: 0.82rem; }
            .pricing-table th, .pricing-table td { padding: 8px 10px; }
            body { font-size: 16px; }
            .article-content p, .article-content li { font-size: 16px; }
            .cta-button { display: block; width: 100%; text-align: center; padding: 15px 20px; min-height: 48px; }
            .sticky-mobile-cta { display: block; }
            img { max-width: 100%; height: auto; }
            /* Add bottom padding so sticky CTA doesn't cover content */
            body { padding-bottom: 72px; }
            /* Hide share bar when sticky CTA is shown (avoid overlap) */
            #share-bar { bottom: 64px !important; }
        }