:root {
            --primary: #1D7BFF;
            --accent: rgb(80,250,123);
            --bg-dark: #070A13;
            --bg-card: rgba(255, 255, 255, 0.03);
            --border-color: rgba(255, 255, 255, 0.08);
            --text-main: #FFFFFF;
            --text-muted: #8F9CAE;
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-dark);
            color: var(--text-main);
            line-height: 1.6;
            overflow-x: hidden;
        }

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

        
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 100;
            background: rgba(7, 10, 19, 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: 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(--text-main);
            white-space: nowrap;
            letter-spacing: 0.5px;
        }

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

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

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

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            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: #fff;
            border: 1px solid var(--primary);
            box-shadow: 0 4px 14px rgba(29, 123, 255, 0.4);
        }

        .btn-primary:hover {
            background-color: #0062E6;
            border-color: #0062E6;
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-main);
            border: 1px solid var(--border-color);
        }

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

        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 6px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 4px;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            transition: all 0.3s ease;
        }

        
        .drawer {
            position: fixed;
            top: 0;
            left: -300px;
            width: 300px;
            height: 100%;
            background-color: var(--bg-dark);
            border-right: 1px solid var(--border-color);
            z-index: 150;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 30px 20px;
            display: flex;
            flex-direction: column;
            gap: 40px;
        }

        .drawer.open {
            left: 0;
        }

        .drawer-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

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

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

        .drawer-nav a {
            font-size: 16px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.02);
        }

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

        .drawer-mask {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(4px);
            z-index: 140;
            display: none;
        }

        .drawer-mask.show {
            display: block;
        }

        
        .article-wrapper {
            max-width: 1200px;
            margin: 0 auto;
            padding: 120px 20px 100px;
            display: grid;
            grid-template-columns: 2.5fr 1fr;
            gap: 40px;
        }

        .article-main {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
        }

        .breadcrumbs {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 24px;
        }

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

        .art-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            color: var(--text-main);
        }

        .art-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
            color: var(--text-muted);
            border-bottom: 1px solid var(--border-color);
            padding-bottom: 24px;
            margin-bottom: 30px;
        }

        .art-body {
            font-size: 16px;
            line-height: 1.8;
            color: #E2E8F0;
        }

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

        .art-body img {
            max-width: 100%;
            border-radius: 8px;
            margin: 30px 0;
        }

        .art-body h2, .art-body h3 {
            color: var(--text-main);
            margin: 30px 0 15px;
            font-weight: 700;
        }

        .art-body h2 { font-size: 24px; }
        .art-body h3 { font-size: 20px; }

        .tag-links-area {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }

        .tag-link-item {
            background: rgba(29, 123, 255, 0.1);
            color: var(--primary);
            border: 1px solid rgba(29, 123, 255, 0.2);
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 13px;
        }

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

        
        .prev-next-nav {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            margin-top: 50px;
            padding-top: 30px;
            border-top: 1px solid var(--border-color);
        }

        .pn-card {
            width: 50%;
            background: rgba(255, 255, 255, 0.02);
            border: 1px solid var(--border-color);
            padding: 20px;
            border-radius: 8px;
        }

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

        .pn-label {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
        }

        .pn-title {
            font-size: 14px;
            font-weight: 700;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .sidebar-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            padding: 30px;
        }

        .sidebar-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            border-left: 3px solid var(--primary);
            padding-left: 10px;
        }

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

        .related-item {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.4;
            padding-bottom: 15px;
            border-bottom: 1px solid rgba(255,255,255,0.05);
        }

        .related-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }

        .related-item a:hover {
            color: var(--primary);
        }

        
        .site-footer {
            background-color: #04060c;
            border-top: 1px solid var(--border-color);
            padding: 80px 20px 40px;
            font-size: 14px;
            color: var(--text-muted);
        }

        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 60px;
        }

        .footer-logo-desc {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .footer-desc {
            max-width: 320px;
            line-height: 1.8;
        }

        .footer-title {
            color: var(--text-main);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

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

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        @media (max-width: 992px) {
            .nav-menu, .header-action .btn-outline {
                display: none;
            }

            .menu-toggle {
                display: flex;
            }

            .article-wrapper {
                grid-template-columns: 1fr;
            }

            .prev-next-nav {
                flex-direction: column;
            }

            .pn-card {
                width: 100%;
            }

            .footer-container {
                grid-template-columns: 1fr;
            }
        }