* { 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; }

        /* 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; }

        /* Jump Nav */
        .jump-nav { background: #fff; border: 1px solid #ddd; border-radius: 10px; padding: 18px 24px; margin-bottom: 32px; text-align: center; }
        .jump-nav h3 { font-size: 1rem; margin-bottom: 12px; color: #1a1a2e; }
        .jump-nav a { display: inline-block; width: 38px; height: 38px; line-height: 38px; text-align: center; border-radius: 6px; background: #f0f4ff; color: #155DFC; font-weight: 700; font-size: 1rem; margin: 3px; transition: background 0.2s, color 0.2s; }
        .jump-nav a:hover { background: #155DFC; color: #fff; text-decoration: none; }

        /* Glossary */
        .glossary-letter { font-size: 1.8rem; font-weight: 800; color: #155DFC; margin: 36px 0 16px; padding-bottom: 8px; border-bottom: 3px solid #155DFC; display: inline-block; }
        .glossary-entry { background: #fff; border: 1px solid #e5e7eb; border-radius: 10px; padding: 20px 24px; margin-bottom: 14px; }
        .glossary-entry strong { font-size: 1.08rem; color: #1a1a2e; }
        .glossary-entry p { margin: 8px 0 0; font-size: 0.98rem; line-height: 1.65; }
        .glossary-entry .see-also { font-size: 0.88rem; color: #666; margin-top: 8px; }
        .glossary-entry .see-also a { color: #155DFC; }

        /* 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; }

        /* 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; }

        /* Mobile Toggle */
        .mobile-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

        /* 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; flex-wrap: wrap; justify-content: center; }
            .nav-links a { margin-left: 0; }
            .cta-box { padding: 22px 18px; }
            .jump-nav a { width: 32px; height: 32px; line-height: 32px; font-size: 0.9rem; margin: 2px; }
            .glossary-entry { padding: 16px 18px; }
        }
    
        /* Mobile global fixes */
        @media (max-width: 768px) {
            body { font-size: 16px; }
            p, li, td, th { font-size: 16px !important; }
            img { max-width: 100%; height: auto; }
            .cta-button, .cta-btn, a.cta-button { display: block; width: 100%; text-align: center; min-height: 48px; padding: 14px 20px; box-sizing: border-box; }
        }