* { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif; background: #FFFFFF; color: #1A1A2E; line-height: 1.7; min-height: 100vh; }
        .container { max-width: 800px; margin: 0 auto; padding: 48px 24px 80px; animation: fadeInUp 0.5s ease both; }
        .breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 0.82rem; color: #6B7280; margin-bottom: 32px; flex-wrap: wrap; }
        .breadcrumb a { color: #1A9E94; text-decoration: none; }
        .breadcrumb a:hover { text-decoration: underline; }
        .breadcrumb-sep { color: #D1D5DB; }
        .article-meta { display: flex; align-items: center; gap: 16px; margin-bottom: 24px; flex-wrap: wrap; }
        .article-tag { font-size: 0.75rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.06em; color: #1A9E94; background: rgba(78, 205, 196, 0.1); padding: 3px 10px; border-radius: 20px; }
        .article-date { font-size: 0.85rem; color: #9CA3AF; }
        h1 { font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 700; line-height: 1.25; margin-bottom: 20px; background: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%); -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }
        .article-intro { font-size: 1.1rem; color: #4B5563; border-left: 3px solid #4ECDC4; background: #F8F9FA; padding: 16px 20px; margin-bottom: 32px; line-height: 1.75; border-radius: 0 8px 8px 0; }
        .article-image { display: block; width: 100%; max-width: 380px; height: auto; margin: 24px auto; border-radius: 14px; box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08); }
        .image-caption { display: block; text-align: center; font-size: 0.82rem; color: #9CA3AF; margin: -12px auto 28px; max-width: 520px; font-style: italic; }
        h2 { font-size: 1.5rem; font-weight: 700; color: #1A1A2E; margin-top: 48px; margin-bottom: 16px; padding-bottom: 8px; border-bottom: 1px solid #E5E7EB; }
        h3 { font-size: 1.15rem; font-weight: 600; color: #1A9E94; margin-top: 28px; margin-bottom: 10px; }
        p { color: #4B5563; margin-bottom: 16px; }
        ul, ol { color: #4B5563; padding-left: 24px; margin-bottom: 16px; }
        li { margin-bottom: 8px; }
        strong { color: #1A1A2E; font-weight: 600; }
        em { font-style: italic; }
        a.inline { color: #1A9E94; text-decoration: none; }
        a.inline:hover { text-decoration: underline; }
        .formula { background: rgba(78, 205, 196, 0.06); border-left: 3px solid #4ECDC4; border-radius: 0 8px 8px 0; padding: 16px 20px; margin: 20px 0; color: #4B5563; }
        .formula p { margin-bottom: 10px; }
        .formula p:last-child { margin-bottom: 0; }
        .formula strong { color: #1A1A2E; }
        .table-wrapper { overflow-x: auto; margin: 24px 0; border-radius: 12px; border: 1px solid #E5E7EB; box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04); }
        table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
        caption { caption-side: top; text-align: left; font-size: 0.85rem; color: #6B7280; padding: 10px 16px; background: #F8F9FA; font-weight: 500; }
        thead th { background: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%); color: #FFFFFF; font-weight: 600; padding: 12px 16px; text-align: left; border-bottom: none; }
        tbody td { padding: 12px 16px; color: #4B5563; border-bottom: 1px solid #F3F4F6; vertical-align: top; }
        tbody tr:last-child td { border-bottom: none; }
        tbody tr:hover td { background: #F8F9FA; }
        .cta-box { background: rgba(78, 205, 196, 0.06); border: 1px solid rgba(78, 205, 196, 0.25); border-radius: 16px; padding: 32px; text-align: center; margin: 48px 0 32px; }
        .cta-box h3 { color: #1A1A2E; font-size: 1.3rem; margin-bottom: 10px; -webkit-text-fill-color: unset; }
        .cta-box p { color: #6B7280; margin-bottom: 24px; }
        .cta-buttons { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
        .btn-primary { background: linear-gradient(135deg, #4ECDC4 0%, #44A08D 100%); color: #FFFFFF; padding: 12px 28px; border-radius: 24px; font-weight: 700; font-size: 0.9rem; text-decoration: none; transition: opacity 0.2s; }
        .btn-primary:hover { opacity: 0.85; }
        .btn-secondary { background: #FFFFFF; color: #1A9E94; padding: 12px 28px; border-radius: 24px; font-weight: 600; font-size: 0.9rem; text-decoration: none; border: 1px solid rgba(78, 205, 196, 0.4); transition: background 0.2s; }
        .btn-secondary:hover { background: rgba(78, 205, 196, 0.08); }
        .faq-item { border: 1px solid #E5E7EB; border-radius: 12px; padding: 18px 20px; margin-bottom: 12px; background: #FFFFFF; }
        .faq-item h3 { font-size: 1rem; margin: 0 0 8px; color: #1A1A2E; }
        .faq-item p { margin-bottom: 0; font-size: 0.95rem; }
        .related-articles { border-top: 1px solid #E5E7EB; padding-top: 32px; margin-top: 32px; }
        .related-articles h3 { color: #6B7280; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 16px; -webkit-text-fill-color: unset; }
        .related-links { display: flex; flex-direction: column; gap: 10px; }
        .related-links a { color: #1A9E94; text-decoration: none; font-size: 0.95rem; }
        .related-links a:hover { text-decoration: underline; }
        @keyframes fadeInUp { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
        @media (max-width: 768px) { .cta-buttons { flex-direction: column; align-items: center; } }