:root {
            --primary: rgb(239, 68, 68);
            --primary-hover: rgb(220, 38, 38);
            --primary-light: rgba(239, 68, 68, 0.1);
            --dark-blue: #0B192C;
            --glacier-blue: #1D7BFF;
            --silver-white: #F8FAFC;
            --text-dark: #1E293B;
            --text-light: #64748B;
            --border-color: #E2E8F0;
            --card-shadow: 0 10px 30px -5px rgba(0,0,0,0.05);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            outline: none;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--text-dark);
            background-color: #F8FAFC;
            line-height: 1.6;
        }

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

        
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-color);
            z-index: 1000;
        }

        .header-container {
            max-width: 1200px;
            margin: 0 auto;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
        }

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

        .logo img {
            display: block;
            height: 40px;
            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: var(--dark-blue);
            white-space: nowrap;
        }

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

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

        .nav-desktop a:hover {
            color: var(--primary);
        }

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

        .btn-reg {
            background: var(--primary);
            color: #fff !important;
            padding: 8px 20px;
            border-radius: 6px;
            font-weight: 600;
            font-size: 14px;
        }

        .btn-reg:hover {
            background: var(--primary-hover);
        }

        .menu-trigger {
            display: none;
            flex-direction: column;
            gap: 6px;
            cursor: pointer;
            background: none;
            border: none;
            padding: 5px;
        }

        .menu-trigger span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--text-dark);
            transition: 0.3s;
        }

        
        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(11, 25, 44, 0.5);
            backdrop-filter: blur(5px);
            z-index: 1999;
            opacity: 0;
            visibility: hidden;
            transition: 0.3s;
        }

        .drawer {
            position: fixed;
            top: 0;
            left: -320px;
            width: 300px;
            height: 100%;
            background: #fff;
            z-index: 2000;
            transition: cubic-bezier(0.4, 0, 0.2, 1) 0.3s;
            display: flex;
            flex-direction: column;
            box-shadow: 10px 0 30px rgba(0,0,0,0.1);
        }

        .drawer-header {
            padding: 20px;
            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 {
            flex: 1;
            overflow-y: auto;
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .drawer-nav a {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-dark);
            padding: 10px 15px;
            border-radius: 8px;
            background: #f8fafc;
        }

        .drawer-nav a:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

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

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

        
        .breadcrumbs-bar {
            padding-top: 100px;
            padding-bottom: 20px;
            background: #fff;
            border-bottom: 1px solid var(--border-color);
        }

        .breadcrumbs-bar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            font-size: 14px;
            color: var(--text-light);
        }

        .breadcrumbs-bar a {
            color: var(--text-dark);
        }

        .breadcrumbs-bar a:hover {
            color: var(--primary);
        }

        
        .article-container {
            max-width: 1200px;
            margin: 40px auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: 2.5fr 1fr;
            gap: 40px;
        }

        .article-main {
            background: #fff;
            border-radius: 20px;
            padding: 40px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .article-header {
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 30px;
            margin-bottom: 30px;
        }

        .article-header h1 {
            font-size: 28px;
            font-weight: 800;
            color: var(--dark-blue);
            line-height: 1.4;
            margin-bottom: 20px;
        }

        .article-info-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 14px;
            color: var(--text-light);
            flex-wrap: wrap;
        }

        .article-info-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

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

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

        .article-body img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            margin: 20px auto;
            display: block;
        }

        .article-body h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark-blue);
            margin-top: 30px;
            margin-bottom: 15px;
        }

        
        .prev-next-nav {
            border-top: 1px solid var(--border-color);
            padding-top: 30px;
            margin-top: 40px;
            display: flex;
            justify-content: space-between;
            gap: 20px;
            font-size: 14px;
        }

        .prev-next-nav a {
            max-width: 48%;
            display: block;
        }

        .prev-next-nav a span {
            display: block;
            color: var(--text-light);
            margin-bottom: 5px;
        }

        .prev-next-nav a h4 {
            color: var(--dark-blue);
            font-weight: 600;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .prev-next-nav a:hover h4 {
            color: var(--primary);
        }

        
        .related-area {
            margin-top: 50px;
        }

        .related-title {
            font-size: 20px;
            font-weight: 700;
            color: var(--dark-blue);
            margin-bottom: 20px;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .related-card {
            background: #fff;
            border-radius: 12px;
            padding: 20px;
            border: 1px solid var(--border-color);
            box-shadow: var(--card-shadow);
        }

        .related-card h4 {
            font-size: 15px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card p {
            font-size: 12px;
            color: var(--text-light);
        }

        
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 30px;
        }

        .widget {
            background: #fff;
            border-radius: 16px;
            padding: 25px;
            box-shadow: var(--card-shadow);
            border: 1px solid var(--border-color);
        }

        .widget-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--dark-blue);
            border-left: 4px solid var(--primary);
            padding-left: 12px;
            margin-bottom: 20px;
        }

        .hot-list {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }

        .hot-item {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .hot-num {
            width: 24px;
            height: 24px;
            border-radius: 4px;
            background: #F1F5F9;
            color: var(--text-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
        }

        .hot-item:nth-child(1) .hot-num,
        .hot-item:nth-child(2) .hot-num,
        .hot-item:nth-child(3) .hot-num {
            background: var(--primary-light);
            color: var(--primary);
        }

        .hot-title {
            font-size: 14px;
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-cloud a {
            background: #F1F5F9;
            color: var(--text-light);
            padding: 4px 12px;
            font-size: 12px;
            border-radius: 20px;
        }

        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
        }

        
        footer {
            background: #0B192C;
            color: rgba(255,255,255,0.7);
            border-top: 1px solid rgba(255,255,255,0.1);
        }

        .footer-main {
            padding: 80px 0 40px;
        }

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

        .footer-brand .logo span {
            color: #fff;
        }

        .footer-brand p {
            margin-top: 15px;
            font-size: 14px;
            line-height: 1.8;
        }

        .footer-column h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .footer-column ul li a {
            font-size: 14px;
        }

        .footer-column ul li a:hover {
            color: #fff;
        }

        .footer-contact p {
            font-size: 14px;
            margin-bottom: 12px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.05);
            padding: 30px 0;
            font-size: 13px;
        }

        .footer-bottom-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .footer-links {
            display: flex;
            gap: 20px;
        }

        @media (max-width: 992px) {
            .article-container {
                grid-template-columns: 1fr;
            }
            .sidebar {
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop, .header-btns {
                display: none;
            }
            .menu-trigger {
                display: flex;
            }
            .article-main {
                padding: 25px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .sidebar {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }