:root {
            --primary: rgb(98, 0, 238);
            --primary-hover: rgb(75, 0, 190);
            --primary-light: rgba(98, 0, 238, 0.1);
            --text-main: #1e293b;
            --text-muted: #64748b;
            --bg-light: #f8fafc;
            --bg-white: #ffffff;
            --border-color: #e2e8f0;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
            --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
            --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
        }

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

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

        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            height: 72px;
            background: #ffffff;
            box-shadow: var(--shadow-sm);
            z-index: 1000;
        }

        .header-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 100%;
        }

        .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;
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-muted);
            padding: 8px 0;
        }

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

        .nav-cta {
            background: var(--primary);
            color: #ffffff;
            padding: 10px 24px;
            border-radius: 8px;
            font-weight: 600;
        }

        .menu-toggle {
            display: none;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            z-index: 1001;
        }

        .menu-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background-color: var(--text-main);
            margin: 5px 0;
            transition: var(--transition);
        }

        
        .drawer {
            position: fixed;
            top: 0;
            left: -100%;
            width: 300px;
            height: 100vh;
            background: #ffffff;
            box-shadow: var(--shadow-lg);
            z-index: 1000;
            transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            padding: 96px 24px 24px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .drawer.active {
            transform: translateX(100%);
        }

        .drawer-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: rgba(15, 23, 42, 0.6);
            backdrop-filter: blur(4px);
            z-index: 999;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

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

        .drawer .nav-link {
            font-size: 18px;
            padding: 12px 0;
            display: block;
            border-bottom: 1px solid var(--border-color);
        }

        
        .page-hero {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
            color: #ffffff;
            padding: 140px 0 60px;
        }

        .breadcrumb {
            display: inline-flex;
            gap: 8px;
            font-size: 14px;
            color: #94a3b8;
            margin-bottom: 16px;
        }

        .breadcrumb a:hover {
            color: #ffffff;
        }

        .page-title {
            font-size: 32px;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
        }

        .meta-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 14px;
            color: #94a3b8;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 16px;
        }

        
        .main-content {
            padding: 80px 0;
        }

        .grid-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 48px;
        }

        
        .article-card-main {
            background: var(--bg-white);
            border: 1px solid var(--border-color);
            border-radius: 16px;
            padding: 40px;
            margin-bottom: 32px;
        }

        .rich-content {
            font-size: 16px;
            color: var(--text-main);
            line-height: 1.8;
        }

        .rich-content p {
            margin-bottom: 24px;
        }

        .rich-content h2, .rich-content h3 {
            margin: 32px 0 16px;
            color: #0f172a;
        }

        
        .prev-next-links {
            display: flex;
            justify-content: space-between;
            gap: 20px;
            border-top: 1px solid var(--border-color);
            padding-top: 32px;
            margin-top: 48px;
        }

        .pn-card {
            width: 50%;
            background: var(--bg-light);
            border: 1px solid var(--border-color);
            padding: 16px;
            border-radius: 8px;
        }

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

        .pn-label {
            font-size: 11px;
            color: var(--text-muted);
            text-transform: uppercase;
            margin-bottom: 4px;
        }

        .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: 32px;
        }

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

        .widget-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 20px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--primary);
        }

        
        .footer {
            background: #0f172a;
            color: #94a3b8;
            padding: 80px 0 40px;
            border-top: 1px solid #1e293b;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr repeat(3, 1fr);
            gap: 48px;
            margin-bottom: 48px;
        }

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

        .footer .logo span {
            color: #ffffff;
        }

        .footer-desc {
            font-size: 14px;
            line-height: 1.6;
            max-width: 320px;
        }

        .footer-title {
            color: #ffffff;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 24px;
        }

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

        .footer-links a {
            font-size: 14px;
        }

        .footer-links a:hover {
            color: #ffffff;
            padding-left: 4px;
        }

        .footer-bottom {
            padding-top: 32px;
            border-top: 1px solid #1e293b;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 12px;
        }

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

        @media (max-width: 1024px) {
            .grid-layout { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .menu-toggle { display: block; }
            .article-card-main { padding: 24px; }
            .prev-next-links { flex-direction: column; }
            .pn-card { width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 32px; }
            .footer-bottom { flex-direction: column; gap: 16px; text-align: center; }
        }