:root {
            --primary: #4f46e5;
            --primary-light: #818cf8;
            --secondary: #f3f4f6;
            --accent: #10b981;
            --text-primary: #1f2937;
            --text-secondary: #6b7280;
            --text-muted: #9ca3af;
            --border: #e5e7eb;
            --bg-primary: #ffffff;
            --bg-secondary: #f9fafb;
            --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
            --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
            --radius: 8px;
            --radius-lg: 12px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
            background: #ffffff;
            color: var(--text-primary);
            line-height: 1.5;
            overflow-x: hidden;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .geometric-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: -1;
        }
        
        .geometric-shape {
            position: absolute;
            background-color: rgba(243, 244, 246, 0.4);
            border: 1px solid rgba(229, 231, 235, 0.3);
        }
        
        .shape-circle {
            border-radius: 50%;
        }
        
        .shape-triangle {
            width: 0;
            height: 0;
            border-style: solid;
            border-color: transparent transparent rgba(243, 244, 246, 0.4) transparent;
            background: transparent;
            border-width: 0 40px 70px 40px;
        }
        
        .shape-square {
            transform: rotate(45deg);
        }
        
        .shape-rectangle {
            border-radius: 4px;
        }
        
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border);
            z-index: 1000;
            transition: all 0.3s ease;
        }
        
        .header-content {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            text-decoration: none;
            color: var(--text-primary);
            font-weight: 700;
            font-size: 20px;
            gap: 10px;
        }
        
        .logo img {
            width: 36px;
            height: 36px;
            border-radius: 8px;
        }
        
        .nav {
            display: flex;
            align-items: center;
            gap: 30px;
        }
        
        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 15px;
            transition: color 0.2s ease;
        }
        
        .nav-link:hover {
            color: var(--primary);
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: var(--radius);
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
        }
        
        .btn-primary {
            background: var(--primary);
            color: white;
        }
        
        .btn-primary:hover {
            background: #4338ca;
            transform: translateY(-1px);
        }
        
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--border);
        }
        
        .btn-outline:hover {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
        }
        
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-primary);
            cursor: pointer;
        }
        
        .mobile-menu {
            position: fixed;
            top: 0;
            right: -100%;
            width: 280px;
            height: 100vh;
            background: white;
            z-index: 1001;
            transition: right 0.3s ease;
            box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
            overflow-y: auto;
        }
        
        .mobile-menu.active {
            right: 0;
        }
        
        .mobile-header {
            background: var(--primary);
            color: white;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .mobile-close {
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }
        
        .mobile-nav {
            padding: 20px;
        }
        
        .mobile-nav-item {
            margin-bottom: 8px;
        }
        
        .mobile-nav-item a {
            display: flex;
            align-items: center;
            padding: 12px;
            color: var(--text-primary);
            text-decoration: none;
            border-radius: 8px;
            transition: background 0.2s ease;
        }
        
        .mobile-nav-item a:hover {
            background: var(--secondary);
        }
        
        .mobile-nav-item a i {
            margin-right: 12px;
            width: 20px;
        }
        
        .mobile-actions {
            padding: 20px;
            border-top: 1px solid var(--border);
        }
        
        .mobile-actions .btn {
            width: 100%;
            justify-content: center;
            margin-bottom: 12px;
        }
        
        .overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            z-index: 1000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }
        
        .overlay.active {
            opacity: 1;
            visibility: visible;
        }
        
        .hero {
            padding: 120px 0 80px;
            position: relative;
            overflow: hidden;
        }
        
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 16px;
            color: var(--text-primary);
        }
        
        .hero-subtitle {
            font-size: 18px;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 16px;
        }
        
        .hero-description {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 30px;
            line-height: 1.6;
        }
        
        .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        
        .hero-visual {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .hero-visual img {
            width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-lg);
        }
        
        .features {
            padding: 80px 0;
            position: relative;
        }
        
        .section-header {
            text-align: center;
            margin-bottom: 50px;
        }
        
        .section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background: white;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 30px;
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        
        .feature-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        
        .feature-icon {
            width: 50px;
            height: 50px;
            background: var(--primary);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 22px;
            margin-bottom: 20px;
        }
        
        .feature-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        
        .feature-description {
            color: var(--text-secondary);
            line-height: 1.5;
            flex-grow: 1;
        }
        
        .workflow {
            padding: 80px 0;
            background: var(--bg-secondary);
            position: relative;
        }
        
        .workflow-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }
        
        .workflow-card {
            background: white;
            border-radius: var(--radius-lg);
            padding: 30px;
            text-align: center;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
            height: 100%;
        }
        
        .workflow-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        
        .step-number {
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            margin: 0 auto 20px;
        }
        
        .step-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text-primary);
        }
        
        .step-description {
            color: var(--text-secondary);
            line-height: 1.5;
        }
        
        .demo {
            padding: 80px 0;
            position: relative;
        }
        
        .demo-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 40px;
        }
        
        .code-panel {
            background: white;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        
        .code-panel:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        
        .panel-header {
            background: var(--primary);
            color: white;
            padding: 14px 20px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .panel-content {
            padding: 20px;
            text-align: center;
        }
        
        .code-image {
            max-width: 100%;
            border-radius: 6px;
            border: 1px solid var(--border);
        }
        
        .compatibility {
            padding: 80px 0;
            background: var(--bg-secondary);
            position: relative;
        }
        
        .versions-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
            gap: 20px;
            margin-top: 40px;
        }
        
        .version-card {
            background: white;
            padding: 20px;
            border-radius: var(--radius-lg);
            text-align: center;
            border: 1px solid var(--border);
            transition: all 0.3s ease;
        }
        
        .version-card:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-md);
        }
        
        .version-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 10px;
        }
        
        .version-number {
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        
        .version-status {
            font-size: 12px;
            padding: 3px 10px;
            border-radius: 20px;
            background: rgba(16, 185, 129, 0.1);
            color: var(--accent);
            font-weight: 500;
        }
        
        .links {
            padding: 80px 0;
            position: relative;
        }
        
        .links-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }
        
        .link-card {
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(10px);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(229, 231, 235, 0.5);
            transition: all 0.3s ease;
            height: 100%;
            display: flex;
            flex-direction: column;
            position: relative;
            z-index: 1;
            box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
        }
        
        .link-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
        }
        
        .link-icon {
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--secondary);
        }
        
        .link-icon i {
            font-size: 28px;
            color: var(--primary);
        }
        
        .link-content {
            padding: 25px;
            flex-grow: 1;
            display: flex;
            flex-direction: column;
        }
        
        .link-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        
        .link-description {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 20px;
            flex-grow: 1;
            font-size: 15px;
        }
        
        .link-tags {
            display: flex;
            gap: 8px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        
        .link-tag {
            background: var(--primary-light);
            color: white;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
        }
        
        .link-btn {
            width: 100%;
            padding: 12px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 6px;
            text-decoration: none;
            text-align: center;
            font-weight: 600;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
        }
        
        .link-btn:hover {
            background: #4338ca;
        }
        
        .footer {
            background: linear-gradient(135deg, rgba(79, 70, 229, 0.05), rgba(99, 102, 241, 0.02));
            color: var(--text-primary);
            padding: 40px 0 20px;
            position: relative;
            overflow: hidden;
        }
        
        .footer-content {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 30px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }
        
        .footer-link {
            color: var(--text-secondary);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color 0.2s ease;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.7);
            padding: 8px 16px;
            border-radius: var(--radius);
            backdrop-filter: blur(5px);
        }
        
        .footer-link:hover {
            color: var(--primary);
            background: rgba(255, 255, 255, 0.9);
        }
        
        .footer-bottom {
            border-top: 1px solid rgba(229, 231, 235, 0.5);
            padding-top: 20px;
            text-align: center;
            color: var(--text-secondary);
            font-size: 14px;
            position: relative;
            z-index: 1;
        }
        
        .footer-bottom a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        
        .footer-bottom a:hover {
            color: var(--primary);
        }
        
        .announcement-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 2000;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .announcement-modal.active {
            display: flex;
            opacity: 1;
        }
        
        .announcement-backdrop {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.6);
            backdrop-filter: blur(4px);
        }
        
        .announcement-container {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            height: 100%;
            padding: 20px;
        }
        
        .announcement-card {
            background: white;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-xl);
            width: 100%;
            max-width: 400px;
            overflow: hidden;
            transform: scale(0.9);
            transition: transform 0.3s ease;
        }
        
        .announcement-modal.active .announcement-card {
            transform: scale(1);
        }
        
        .announcement-icon {
            height: 70px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
        }
        
        .announcement-icon i {
            font-size: 28px;
            color: white;
        }
        
        .announcement-content {
            padding: 25px 20px;
            text-align: center;
        }
        
        .announcement-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
            color: var(--text-primary);
        }
        
        .announcement-text {
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 20px;
        }
        
        .announcement-confirm {
            width: 100%;
            padding: 10px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.2s ease;
        }
        
        .announcement-confirm:hover {
            background: #4338ca;
        }
        
        @media (max-width: 768px) {
            .nav {
                display: none;
            }
            
            .mobile-menu-btn {
                display: block;
            }
            
            .hero {
                padding: 100px 0 60px;
            }
            
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
                text-align: center;
            }
            
            .hero-actions {
                justify-content: center;
            }
            
            .demo-grid {
                grid-template-columns: 1fr;
            }
            
            .features-grid,
            .workflow-grid {
                grid-template-columns: 1fr;
            }
            
            .versions-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .links-grid {
                grid-template-columns: 1fr;
            }
            
            .footer-content {
                flex-direction: column;
                text-align: center;
                gap: 15px;
            }
        }
        
        .scroll-animate {
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.6s ease;
        }
        
        .scroll-animate.visible {
            opacity: 1;
            transform: translateY(0);
        }