:root { --primary: rgb(66,133,244); --primary-hover: #3367d6; --primary-light: rgba(66,133,244,0.08); --text-main: #1a1f36; --text-muted: #4b5563; --bg-body: #f7f9fc; --border-color: #e5e7eb; --radius-lg: 12px; --container-width: 1200px; }
        * { box-sizing: border-box; margin: 0; padding: 0; }
        body { font-family: -apple-system, sans-serif; background: var(--bg-body); color: var(--text-main); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: 0.3s; }
        ul { list-style: none; }
        img { max-width: 100%; height: auto; border-radius: 8px; }
        .container { max-width: var(--container-width); margin: 0 auto; padding: 0 20px; }

        
        .site-header { background: #fff; position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--border-color); }
        .header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
        .logo { display: inline-flex; align-items: center; gap: 10px; }
        .logo img { display: block; height: 36px; width: auto; max-width: 160px; object-fit: contain; }
        .logo span { font-size: 20px; font-weight: 800; }
        .desktop-nav { flex: 1; margin: 0 40px; display: flex; justify-content: flex-end; }
        .desktop-nav ul { display: flex; gap: 30px; }
        .desktop-nav a { font-size: 15px; font-weight: 500; color: var(--text-muted); }
        .desktop-nav a:hover { color: var(--primary); }
        .btn { display: inline-flex; align-items: center; padding: 8px 20px; font-size: 14px; font-weight: 600; border-radius: 6px; cursor: pointer; border: 1px solid transparent; background: var(--primary); color: #fff; }
        .mobile-toggle { display: none; background: none; border: none; cursor: pointer; padding: 5px; }

        
        .drawer-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 998; opacity: 0; visibility: hidden; }
        .drawer-overlay.active { opacity: 1; visibility: visible; }
        .drawer { position: fixed; top: 0; left: -300px; width: 280px; height: 100vh; background: #fff; z-index: 999; transition: transform 0.3s; display: flex; flex-direction: column; }
        .drawer.active { transform: translateX(300px); }
        .drawer-header { padding: 20px; display: flex; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--border-color); }
        .drawer-close { background: none; border: none; cursor: pointer; padding: 5px; }
        .drawer-body { flex: 1; overflow-y: auto; padding: 20px 0; }
        .drawer-nav li a { display: block; padding: 12px 20px; font-size: 16px; }

        
        .article-layout { display: grid; grid-template-columns: 1fr 320px; gap: 40px; padding: 40px 0; }
        .main-content { background: #fff; padding: 40px; border-radius: var(--radius-lg); box-shadow: 0 2px 10px rgba(0,0,0,0.02); }
        
        
        .breadcrumb { font-size: 14px; color: #9ca3af; margin-bottom: 20px; }
        .breadcrumb a:hover { color: var(--primary); }
        .article-title { font-size: 36px; line-height: 1.3; margin-bottom: 20px; color: #111; }
        .article-meta-bar { display: flex; flex-wrap: wrap; gap: 20px; font-size: 14px; color: #6b7280; padding-bottom: 20px; border-bottom: 1px solid var(--border-color); margin-bottom: 30px; }
        .meta-item { display: flex; align-items: center; gap: 6px; }
        
        
        .article-body { font-size: 16px; line-height: 1.8; color: #374151; }
        .article-body p { margin-bottom: 20px; }
        .article-body h2 { font-size: 24px; margin: 40px 0 20px; color: #111; border-left: 4px solid var(--primary); padding-left: 12px; }
        .article-body h3 { font-size: 20px; margin: 30px 0 15px; color: #111; }
        .article-body blockquote { border-left: 4px solid var(--primary-light); background: #f9fafb; padding: 15px 20px; margin: 20px 0; color: #4b5563; font-style: italic; }
        .article-tags { margin: 40px 0; display: flex; gap: 10px; align-items: center; }
        .article-tags-label { font-weight: 600; color: #111; }
        
        
        .post-nav { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; border-top: 1px solid var(--border-color); padding-top: 30px; margin-top: 40px; }
        .nav-link { display: flex; flex-direction: column; padding: 20px; background: var(--bg-body); border-radius: 8px; }
        .nav-link:hover { background: var(--primary-light); }
        .nav-label { font-size: 12px; color: #6b7280; margin-bottom: 8px; text-transform: uppercase; }
        .nav-title { font-weight: 600; color: var(--primary); font-size: 15px; }
        
        
        .related-section { margin-top: 50px; }
        .related-title { font-size: 24px; margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--border-color); }
        .related-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
        .related-card { display: flex; gap: 15px; background: var(--bg-body); padding: 15px; border-radius: 8px; }
        .related-img { width: 100px; height: 75px; flex-shrink: 0; border-radius: 4px; overflow: hidden; }
        .related-img img { width: 100%; height: 100%; object-fit: cover; }
        .related-info h4 { font-size: 15px; margin-bottom: 5px; line-height: 1.4; }
        .related-info h4 a:hover { color: var(--primary); }
        .related-meta { font-size: 12px; color: #6b7280; }

        
        .sidebar { position: sticky; top: 100px; }
        .side-widget { background: #fff; padding: 25px; border-radius: var(--radius-lg); margin-bottom: 30px; box-shadow: 0 2px 10px rgba(0,0,0,0.02); }
        .widget-title { font-size: 18px; margin-bottom: 15px; color: #111; font-weight: 700; border-left: 3px solid var(--primary); padding-left: 10px; }
        .widget-desc { font-size: 14px; color: #6b7280; margin-bottom: 15px; line-height: 1.6; }

        
        .site-footer { background: #1a1d20; color: #9ca3af; padding: 60px 0 20px; }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 40px; margin-bottom: 40px; }
        .footer-logo span { color: #fff; }
        .footer-desc { margin-top: 16px; font-size: 14px; }
        .footer-title { color: #fff; font-size: 16px; margin-bottom: 20px; }
        .footer-links ul { display: flex; flex-direction: column; gap: 12px; }
        .footer-bottom { text-align: center; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); }

        @media (max-width: 1024px) {
            .article-layout { grid-template-columns: 1fr; }
            .sidebar { position: static; }
        }
        @media (max-width: 768px) {
            .desktop-nav, .header-actions .btn { display: none; }
            .mobile-toggle { display: block; }
            .article-title { font-size: 28px; }
            .main-content { padding: 20px; }
            .post-nav, .related-grid, .footer-grid { grid-template-columns: 1fr; }
        }