:root {
            --primary: #1D7BFF;
            --primary-hover: #1565C0;
            --bg-deep: #0A1128;
            --bg-light: #F4F7FC;
            --text-main: #1C2D42;
            --text-muted: #667085;
            --border-color: rgba(29, 123, 255, 0.15);
            --shadow-sm: 0 2px 8px rgba(10, 17, 40, 0.05);
            --shadow-md: 0 8px 24px rgba(10, 17, 40, 0.08);
            --shadow-lg: 0 16px 48px rgba(10, 17, 40, 0.12);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; color: var(--text-main); background: var(--bg-light); line-height: 1.6; }
        a { text-decoration: none; color: inherit; transition: all 0.3s ease; }
        .container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        
        .header { background: rgba(255, 255, 255, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); position: sticky; top: 0; z-index: 1000; height: 70px; display: flex; align-items: center; }
        .header-inner { display: flex; justify-content: space-between; align-items: center; width: 100%; }
        .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; line-height: 1; color: var(--bg-deep); white-space: nowrap; }
        .nav-menu { display: flex; align-items: center; gap: 32px; }
        .nav-item { font-size: 15px; font-weight: 500; color: var(--text-main); }
        .nav-item:hover { color: var(--primary); }
        .mobile-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; color: var(--bg-deep); }

        .inner-banner { background: linear-gradient(135deg, var(--bg-deep) 0%, #152C5B 100%); color: #fff; padding: 40px 0; }
        .breadcrumb { font-size: 14px; color: #A5C0E6; }
        .breadcrumb a:hover { color: #FFF; }

        .section { padding: 60px 0; }
        .article-layout { display: grid; grid-template-columns: 2.8fr 1.2fr; gap: 40px; }
        
        .article-card { background: #fff; border-radius: 10px; border: 1px solid var(--border-color); padding: 40px; box-shadow: var(--shadow-sm); }
        .article-header { border-bottom: 1px solid #f0f4f8; padding-bottom: 24px; margin-bottom: 30px; }
        .article-meta { display: flex; gap: 20px; font-size: 13px; color: var(--text-muted); margin-bottom: 16px; }
        .article-title { font-size: 30px; font-weight: 800; color: var(--bg-deep); line-height: 1.4; }
        
        .article-body { font-size: 16px; color: #334155; line-height: 1.8; }
        .article-body p { margin-bottom: 24px; }
        .article-body h2, .article-body h3 { color: var(--bg-deep); margin: 36px 0 16px; font-weight: 700; }
        
        .article-tags { border-top: 1px solid #f0f4f8; padding-top: 24px; margin-top: 40px; display: flex; align-items: center; gap: 12px; }
        .article-tags-title { font-size: 14px; font-weight: 700; color: var(--bg-deep); }
        .article-tag-link { background: var(--bg-light); color: var(--primary); padding: 4px 12px; border-radius: 4px; font-size: 13px; font-weight: 600; }
        .article-tag-link:hover { background: var(--primary); color: #FFF; }

        .sibling-links { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid #f0f4f8; padding-top: 24px; margin-top: 40px; font-size: 14px; color: var(--text-muted); }
        .sibling-links a { font-weight: 600; color: var(--bg-deep); }
        .sibling-links a:hover { color: var(--primary); }

        .sidebar-widget { background: #fff; border-radius: 10px; border: 1px solid var(--border-color); padding: 30px; margin-bottom: 30px; }
        .sidebar-title { font-size: 18px; font-weight: 700; color: var(--bg-deep); margin-bottom: 20px; border-left: 4px solid var(--primary); padding-left: 12px; }

        .like-list { list-style: none; }
        .like-item { margin-bottom: 16px; border-bottom: 1px dashed var(--border-color); padding-bottom: 12px; }
        .like-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
        .like-item a { font-size: 14px; font-weight: 600; color: var(--bg-deep); line-height: 1.4; display: block; }
        .like-item a:hover { color: var(--primary); }
        .like-date { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

        .site-footer { background: var(--bg-deep); color: #A5C0E6; padding: 80px 0 30px; border-top: 1px solid rgba(255,255,255,0.05); }
        .footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1.5fr; gap: 45px; margin-bottom: 50px; }
        .footer-brand .logo span { color: #FFF; }
        .footer-desc { font-size: 14px; margin-top: 20px; line-height: 1.7; }
        .footer-grid h4 { font-size: 16px; color: #FFF; font-weight: 700; margin-bottom: 24px; }
        .footer-grid ul { list-style: none; }
        .footer-grid ul li { margin-bottom: 12px; }
        .footer-grid ul li a:hover { color: #FFF; padding-left: 5px; }
        .footer-bottom { border-top: 1px solid rgba(255, 255, 255, 0.08); padding-top: 30px; font-size: 13px; }
        .footer-bottom-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 15px; }

        .drawer-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(10, 17, 40, 0.6); backdrop-filter: blur(4px); z-index: 1999; display: none; }
        .drawer-menu { position: fixed; top: 0; left: -300px; width: 300px; height: 100%; background: var(--bg-deep); z-index: 2000; box-shadow: 4px 0 24px rgba(0,0,0,0.2); transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1); display: flex; flex-direction: column; }
        .drawer-menu.active { left: 0; }
        .drawer-header { height: 70px; display: flex; align-items: center; justify-content: space-between; padding: 0 20px; border-bottom: 1px solid rgba(255,255,255,0.08); }
        .drawer-header .logo span { color: #FFFFFF; }
        .drawer-close { background: none; border: none; font-size: 28px; color: #FFF; cursor: pointer; }
        .drawer-nav { padding: 20px; flex-grow: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 16px; }
        .drawer-nav-item { font-size: 16px; font-weight: 600; color: #A5C0E6; padding: 12px 16px; border-radius: 6px; }
        .drawer-nav-item:hover { color: #FFF; background: rgba(29, 123, 255, 0.15); }
        .drawer-footer { padding: 20px; border-top: 1px solid rgba(255,255,255,0.08); font-size: 12px; color: #667085; }

        @media (max-width: 991px) {
            .nav-menu { display: none; }
            .mobile-toggle { display: block; }
            .article-layout { grid-template-columns: 1fr; }
            .article-card { padding: 24px; }
            .footer-grid { grid-template-columns: 1fr; }
        }