:root { --primary: rgb(14,116,144); --primary-light: rgba(14,116,144,0.05); --text-main: #1e293b; --text-muted: #475569; --bg-body: #f8fafc; --border-color: #e2e8f0; }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: sans-serif; background: var(--bg-body); color: var(--text-main); line-height: 1.8; display: flex; flex-direction: column; min-height: 100vh; }
        a { text-decoration: none; color: inherit; transition: 0.3s; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; display: block; border-radius: 8px; }
        .container { max-width: 1000px; margin: 0 auto; padding: 0 20px; }
        
        .header { background: #fff; box-shadow: 0 2px 10px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
        .header-inner { display: flex; justify-content: space-between; align-items: center; height: 80px; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .logo { display: inline-flex; align-items: center; gap: 12px; }
        .logo img { height: 45px; max-width: 180px; object-fit: contain; flex-shrink: 0; }
        .logo span { font-size: 22px; font-weight: 800; color: var(--primary); white-space: nowrap; }
        .desktop-nav { display: flex; gap: 30px; }
        .desktop-nav a { font-weight: 500; padding: 8px 12px; border-radius: 6px; }
        .desktop-nav a:hover { color: var(--primary); background: var(--primary-light); }
        .menu-toggle { display: none; font-size: 24px; color: var(--primary); cursor: pointer; }
        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 999; opacity: 0; visibility: hidden; transition: 0.3s; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100%; background: #fff; z-index: 1000; transition: 0.3s; display: flex; flex-direction: column; }
        .drawer.active { left: 0; }
        .drawer-header { padding: 20px; border-bottom: 1px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
        .drawer-close { font-size: 28px; cursor: pointer; color: var(--text-muted); }
        .drawer-nav { padding: 20px 0; }
        .drawer-nav a { display: block; padding: 15px 25px; border-bottom: 1px solid var(--border-color); font-weight: 500; }

        
        .breadcrumb { padding: 20px 0; font-size: 14px; color: var(--text-muted); }
        .breadcrumb a { color: var(--primary); }
        
        .article-wrap { background: #fff; padding: 40px 50px; border-radius: 12px; box-shadow: 0 5px 20px rgba(0,0,0,0.02); border: 1px solid var(--border-color); margin-bottom: 40px; }
        .art-header { margin-bottom: 30px; border-bottom: 1px solid var(--border-color); padding-bottom: 20px; text-align: center; }
        .art-header h1 { font-size: 32px; color: #0f172a; margin-bottom: 15px; line-height: 1.4; }
        .art-meta { display: flex; justify-content: center; gap: 20px; flex-wrap: wrap; font-size: 14px; color: var(--text-muted); }
        .art-meta span { display: flex; align-items: center; gap: 5px; }
        .art-meta .tags { color: var(--primary); }
        
        .art-content { font-size: 17px; color: #334155; }
        .art-content h2, .art-content h3 { color: #0f172a; margin: 30px 0 15px; }
        .art-content p { margin-bottom: 20px; }
        .art-content ul, .art-content ol { margin-bottom: 20px; padding-left: 20px; }
        .art-content blockquote { border-left: 4px solid var(--primary); background: var(--primary-light); padding: 15px 20px; margin: 20px 0; border-radius: 0 8px 8px 0; color: #475569; }
        .art-content img { margin: 30px auto; box-shadow: 0 10px 30px rgba(0,0,0,0.1); }
        
        .art-cta { background: var(--primary-light); border: 1px dashed var(--primary); padding: 30px; text-align: center; border-radius: 8px; margin: 40px 0; }
        .art-cta h4 { font-size: 20px; color: var(--primary); margin-bottom: 10px; }
        .art-cta p { margin-bottom: 20px; font-size: 15px; }
        .art-cta a { display: inline-block; background: var(--primary); color: #fff; padding: 12px 30px; border-radius: 30px; font-weight: bold; }
        .art-cta a:hover { background: var(--primary-hover); transform: translateY(-2px); }

        .art-nav { display: flex; justify-content: space-between; border-top: 1px solid var(--border-color); padding-top: 20px; margin-top: 40px; font-size: 15px; }
        .art-nav a { color: var(--primary); font-weight: 500; }
        .art-nav a:hover { text-decoration: underline; }

        
        .related-sec { margin-bottom: 60px; }
        .related-title { font-size: 24px; border-left: 4px solid var(--primary); padding-left: 15px; margin-bottom: 30px; font-weight: bold; }
        .rel-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 25px; }
        .rel-card { background: #fff; border: 1px solid var(--border-color); border-radius: 8px; overflow: hidden; transition: 0.3s; }
        .rel-card:hover { border-color: var(--primary); box-shadow: 0 10px 20px rgba(14,116,144,0.08); transform: translateY(-3px); }
        .rel-img { height: 160px; overflow: hidden; }
        .rel-img img { width: 100%; height: 100%; object-fit: cover; border-radius: 0; }
        .rel-info { padding: 15px; }
        .rel-info h4 { font-size: 16px; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
        .rel-info .rel-meta { font-size: 12px; color: var(--text-muted); display: flex; justify-content: space-between; }

        .footer { background: #1e293b; color: #94a3b8; padding: 60px 0 20px; margin-top: auto; }
        .footer-inner { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 40px; margin-bottom: 40px; }
        .foot-about .logo span, .foot-title { color: #fff; }
        .foot-links li { margin-bottom: 12px; }
        .footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); }

        @media(max-width: 768px) { .desktop-nav { display: none; } .menu-toggle { display: block; } .footer-grid { grid-template-columns: 1fr; } .article-wrap { padding: 25px 20px; } .art-header h1 { font-size: 24px; } .art-nav { flex-direction: column; gap: 15px; text-align: center; } .rel-grid { grid-template-columns: 1fr; } }