:root {
            --primary: rgb(52,120,246);
            --primary-hover: #155EC2;
            --glacier-blue: #E0F2FE;
            --silver-white: #F9FAFB;
            --deep-sea-ink: #0B0F19;
            --card-bg: #121826;
            --border-color: rgba(255, 255, 255, 0.08);
            --text-light: #F3F4F6;
            --text-gray: #9CA3AF;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        body {
            background-color: var(--deep-sea-ink);
            color: var(--text-light);
            line-height: 1.6;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

        
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(11, 15, 25, 0.8);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .logo img {
            display: block;
            height: 36px;
            width: auto;
            max-width: 160px;
            object-fit: contain;
            flex-shrink: 0;
        }

        .logo span {
            display: inline-block;
            font-size: 18px;
            font-weight: 800;
            line-height: 1;
            color: #ffffff;
            white-space: nowrap;
        }

        .nav-menu {
            display: flex;
            align-items: center;
            gap: 30px;
        }

        .nav-menu a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-gray);
        }

        .nav-menu a:hover, .nav-menu a.active {
            color: var(--primary);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .btn-primary {
            background-color: var(--primary);
            color: #ffffff;
        }

        .btn-primary:hover {
            background-color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(52, 120, 246, 0.3);
        }

        .btn-outline {
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-light);
        }

        .btn-outline:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: var(--text-light);
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: #ffffff;
            font-size: 24px;
            cursor: pointer;
        }

        
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(4px);
            z-index: 199;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .drawer-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .mobile-drawer {
            position: fixed;
            top: 0;
            left: -300px;
            width: 300px;
            height: 100%;
            background: var(--deep-sea-ink);
            border-right: 1px solid var(--border-color);
            z-index: 200;
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 30px;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .mobile-drawer.active {
            left: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 20px;
        }

        .drawer-close {
            background: none;
            border: none;
            color: var(--text-gray);
            font-size: 24px;
            cursor: pointer;
        }

        .drawer-menu {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .drawer-menu a {
            font-size: 16px;
            color: var(--text-light);
            padding: 8px 0;
        }

        
        .tag-main-banner {
            padding: 140px 20px 60px;
            background: radial-gradient(circle at top, rgba(29, 123, 255, 0.08) 0%, transparent 50%);
            border-bottom: 1px solid var(--border-color);
        }

        .tag-banner-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .tag-main-banner h1 {
            font-size: 32px;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .tag-main-banner p {
            color: var(--text-gray);
            font-size: 14px;
        }

        .tag-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 20px;
            display: grid;
            grid-template-columns: 8fr 4fr;
            gap: 40px;
        }

        
        .tag-article-list {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .tag-article-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            display: grid;
            grid-template-columns: 3.5fr 8.5fr;
            transition: all 0.3s ease;
        }

        .tag-article-card:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }

        .t-card-img {
            width: 100%;
            height: 100%;
            min-height: 180px;
            object-fit: cover;
            background: #1e293b;
        }

        .t-card-body {
            padding: 24px;
            display: flex;
            flex-direction: column;
            justify-content: space-between;
        }

        .t-card-title {
            font-size: 20px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 10px;
        }

        .t-card-desc {
            font-size: 14px;
            color: var(--text-gray);
            margin-bottom: 15px;
        }

        .t-card-meta {
            display: flex;
            gap: 20px;
            font-size: 12px;
            color: var(--text-gray);
            border-top: 1px solid var(--border-color);
            padding-top: 15px;
        }

        
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .sidebar-widget {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 24px;
        }

        .widget-title {
            font-size: 16px;
            font-weight: 700;
            color: #ffffff;
            margin-bottom: 20px;
            border-left: 3px solid var(--primary);
            padding-left: 10px;
        }

        .sidebar-widget ul {
            list-style: none;
        }

        .sidebar-widget li {
            margin-bottom: 15px;
            border-bottom: 1px dashed rgba(255,255,255,0.05);
            padding-bottom: 12px;
        }

        .sidebar-widget li:last-child {
            margin-bottom: 0;
            border-bottom: none;
            padding-bottom: 0;
        }

        .sidebar-widget li a {
            font-size: 14px;
            color: var(--text-light);
        }

        
        .pagination {
            display: flex;
            gap: 8px;
            margin-top: 40px;
            justify-content: center;
        }

        .pagination a, .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 38px;
            height: 38px;
            padding: 0 6px;
            border-radius: 6px;
            font-size: 14px;
            font-weight: 600;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            color: var(--text-light);
        }

        .pagination a:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        .pagination .active {
            background: var(--primary);
            color: #ffffff;
            border-color: var(--primary);
        }

        
        footer {
            background: #060911;
            border-top: 1px solid var(--border-color);
            padding: 80px 20px 40px;
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 50px;
            margin-bottom: 60px;
        }

        .footer-brand .logo {
            margin-bottom: 20px;
        }

        .footer-brand p {
            color: var(--text-gray);
            font-size: 14px;
            line-height: 1.6;
        }

        .footer-links h4 {
            color: #ffffff;
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .footer-links ul {
            list-style: none;
        }

        .footer-links li {
            margin-bottom: 12px;
        }

        .footer-links a {
            color: var(--text-gray);
            font-size: 14px;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 13px;
            color: var(--text-gray);
        }

        @media (max-width: 991px) {
            .tag-content {
                grid-template-columns: 1fr;
            }
            .tag-article-card {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-menu, .header-actions {
                display: none;
            }
            .menu-toggle {
                display: block;
            }
            .footer-container {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }