:root {
            --primary: rgb(2,132,199);
            --primary-hover: rgb(3,105,161);
            --primary-light: #e0f2fe;
            --glacier-blue: #bae6fd;
            --ocean-ink: #0f172a;
            --silver-white: #f8fafc;
            --dark-blue: #0b1329;
            --border-color: #e2e8f0;
            --text-main: #334155;
            --text-dark: #0f172a;
            --text-light: #64748b;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            color: var(--text-main);
            background-color: var(--silver-white);
            line-height: 1.6;
        }
        a { color: inherit; text-decoration: none; transition: var(--transition); }

        
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(226, 232, 240, 0.8);
            box-shadow: var(--shadow-sm);
        }
        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            height: 72px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .logo { display: inline-flex; align-items: center; gap: 12px; }
        .logo img { display: block; height: 40px; width: auto; max-width: 160px; object-fit: contain; flex-shrink: 0; }
        .logo span { display: inline-block; font-size: 20px; font-weight: 800; color: var(--text-dark); letter-spacing: -0.5px; }
        .desktop-nav { display: flex; align-items: center; gap: 32px; }
        .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-dark); padding: 6px 0; border-bottom: 2px solid transparent; }
        .desktop-nav a:hover { color: var(--primary); border-bottom-color: var(--primary); }
        .header-actions { display: flex; align-items: center; gap: 16px; }
        .btn-register-top { background-color: var(--primary); color: white !important; padding: 8px 20px; border-radius: 8px; font-size: 14px; font-weight: 600; box-shadow: 0 2px 4px rgba(2, 132, 199, 0.2); }
        .btn-register-top:hover { background-color: var(--primary-hover); transform: translateY(-1px); }
        .mobile-toggle { display: none; background: none; border: none; font-size: 24px; color: var(--text-dark); cursor: pointer; }

        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(15, 23, 42, 0.6); backdrop-filter: blur(4px); z-index: 1000; opacity: 0; visibility: hidden; transition: var(--transition); }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer { position: fixed; top: 0; left: -320px; width: 300px; height: 100%; background: white; z-index: 1001; box-shadow: var(--shadow-lg); transition: var(--transition); display: flex; flex-direction: column; }
        .drawer.active { left: 0; }
        .drawer-header { padding: 24px; border-bottom: 1px solid var(--border-color); display: flex; align-items: center; justify-content: space-between; }
        .drawer-close { background: none; border: none; font-size: 24px; color: var(--text-light); cursor: pointer; }
        .drawer-nav { padding: 24px; flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 16px; }
        .drawer-nav a { font-size: 16px; font-weight: 600; color: var(--text-dark); padding: 10px 12px; border-radius: 8px; }
        .drawer-nav a:hover { background-color: var(--silver-white); color: var(--primary); }
        .drawer-footer { padding: 24px; border-top: 1px solid var(--border-color); }

        
        .breadcrumb-section {
            background-color: var(--silver-white);
            border-bottom: 1px solid var(--border-color);
            padding: 16px 24px;
        }
        .bc-container { max-width: 1200px; margin: 0 auto; font-size: 14px; color: var(--text-light); }
        .bc-container a:hover { color: var(--primary); }

        .article-layout {
            max-width: 800px;
            margin: 40px auto;
            padding: 0 24px;
        }

        .article-card {
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            box-shadow: var(--shadow-sm);
        }

        .article-title {
            font-size: 32px;
            font-weight: 800;
            color: var(--text-dark);
            line-height: 1.3;
            margin-bottom: 24px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 14px;
            color: var(--text-light);
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 24px;
            margin-bottom: 32px;
        }

        .meta-item { display: inline-flex; align-items: center; gap: 6px; }

        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-main);
        }

        .article-body h2 {
            font-size: 22px;
            font-weight: 800;
            color: var(--text-dark);
            margin: 32px 0 16px;
        }

        .article-body p {
            margin-bottom: 20px;
        }

        .article-body img {
            max-width: 100%;
            border-radius: 8px;
            margin: 24px 0;
        }

        .article-tags-wrapper {
            margin-top: 40px;
            border-top: 1px solid var(--border-color);
            padding-top: 24px;
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .tag-pill {
            background-color: var(--primary-light);
            color: var(--primary);
            padding: 4px 12px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 600;
        }

        
        .prev-next-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .pn-card {
            flex: 1;
            min-width: 240px;
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            box-shadow: var(--shadow-sm);
        }

        .pn-card:hover { border-color: var(--primary); }

        .pn-lbl { font-size: 12px; color: var(--text-light); text-transform: uppercase; margin-bottom: 8px; }
        .pn-title { font-size: 15px; font-weight: 700; color: var(--text-dark); }

        
        .related-section {
            max-width: 800px;
            margin: 60px auto;
            padding: 0 24px;
        }
        .related-title { font-size: 20px; font-weight: 800; color: var(--text-dark); margin-bottom: 24px; }
        .related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
        .related-card {
            background-color: white;
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 20px;
            transition: var(--transition);
        }
        .related-card:hover { transform: translateY(-2px); border-color: var(--primary); }
        .related-card-title { font-size: 15px; font-weight: 700; color: var(--text-dark); margin-bottom: 8px; }
        .related-card-date { font-size: 12px; color: var(--text-light); }

        
        .site-footer {
            background-color: var(--ocean-ink);
            color: rgba(255, 255, 255, 0.6);
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 24px 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .footer-brand .logo span {
            color: white;
        }

        .footer-title {
            color: white;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .footer-links {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-links a {
            font-size: 14px;
        }

        .footer-links a:hover {
            color: white;
        }

        .footer-contact {
            font-size: 14px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            flex-wrap: wrap;
            gap: 16px;
        }

        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .desktop-nav, .header-actions {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .related-grid { grid-template-columns: 1fr; }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }