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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
            background: #000000;
            color: #ffffff;
            overflow-x: hidden;
            position: relative;
            min-height: 100vh;
        }

        .grid-background {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: 0;
            pointer-events: none;
            background-image: 
                linear-gradient(rgba(50, 50, 50, 0.4) 1px, transparent 1px),
                linear-gradient(90deg, rgba(50, 50, 50, 0.4) 1px, transparent 1px);
            background-size: 50px 50px;
        }

        .container {
            position: relative;
            z-index: 1;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 40px;
        }

        header {
            padding: 40px 0 30px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            border-bottom: 1px solid #1a1a1a;
        }

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

        .logo {
            width: 50px;
            height: 50px;
            display: block;
        }

        .logo-text {
            font-size: 1.5rem;
            font-weight: 600;
            color: #ffffff;
            text-decoration: none;
        }

        .version {
            display: inline-block;
            padding: 4px 10px;
            background: #1a1a1a;
            border-radius: 6px;
            font-size: 0.75rem;
            color: #888888;
            margin-left: 10px;
        }

        .header-right {
            display: flex;
            gap: 20px;
            align-items: center;
        }

        .nav-link {
            color: #888888;
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s;
        }

        .nav-link:hover {
            color: #ffffff;
        }

        .main-content {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 60px;
            align-items: start;
            padding: 80px 0;
            min-height: 70vh;
        }

        .content-left {
            padding-top: 40px;
        }

        h1 {
            font-size: clamp(2.5rem, 5vw, 3.5rem);
            font-weight: 400;
            color: #ffffff;
            margin-bottom: 20px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .description {
            font-size: 1.1rem;
            color: #888888;
            margin-bottom: 35px;
            line-height: 1.7;
            max-width: 500px;
        }

        .description strong {
            color: #ffffff;
        }

        .links {
            display: flex;
            flex-direction: column;
            gap: 15px;
            margin-bottom: 40px;
        }

        .link-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: #888888;
            font-size: 0.95rem;
        }

        .link-item a {
            color: #3b82f6;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .link-item a:hover {
            text-decoration: underline;
        }

        .arrow {
            display: inline-block;
        }

        .button-group {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .btn {
            padding: 12px 24px;
            font-size: 0.9rem;
            font-weight: 500;
            border: 1px solid #333333;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.2s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: #ffffff;
            gap: 8px;
        }

        .btn:hover {
            background: rgba(255, 255, 255, 0.05);
            border-color: #555555;
        }

        .btn-primary {
            background: #ffffff;
            border-color: #ffffff;
            color: #000000;
        }

        .btn-primary:hover {
            background: #e5e5e5;
            border-color: #e5e5e5;
        }

        .btn-icon {
            width: 16px;
            height: 16px;
        }

        .content-right {
            position: sticky;
            top: 100px;
        }

        .preview-frame {
            width: 100%;
            background: #0a0a0a;
            border-radius: 12px;
            padding: 3px;
            border: 1px solid #1a1a1a;
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
        }

        .preview-inner {
            width: 100%;
            aspect-ratio: 16/10;
            background: #000000;
            border-radius: 10px;
            overflow: hidden;
            position: relative;
        }

        .preview-inner img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .features-section {
            padding: 80px 0;
            border-top: 1px solid #1a1a1a;
        }

        .section-header {
            margin-bottom: 50px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 400;
            color: #ffffff;
            margin-bottom: 15px;
        }

        .section-description {
            font-size: 1rem;
            color: #888888;
            max-width: 600px;
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .feature-card {
            background: #0a0a0a;
            border: 1px solid #1a1a1a;
            border-radius: 12px;
            padding: 30px;
            transition: all 0.2s ease;
        }

        .feature-card:hover {
            border-color: #2a2a2a;
        }

        .feature-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border: 1px solid #333333;
            border-radius: 6px;
            font-size: 0.9rem;
            color: #666666;
            margin-bottom: 20px;
        }

        .feature-title {
            font-size: 1.2rem;
            font-weight: 500;
            margin-bottom: 12px;
            color: #ffffff;
        }

        .feature-description {
            color: #888888;
            line-height: 1.7;
            font-size: 0.9rem;
        }

        .feature-description strong {
            color: #ffffff;
        }

        .changelog-section {
            padding: 60px 0 80px;
        }

        .changelog-card {
            background: #0a0a0a;
            border: 1px solid #1a1a1a;
            border-radius: 12px;
            padding: 30px;
            max-width: 800px;
        }

        .changelog-title {
            font-size: 0.75rem;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: #555555;
            margin-bottom: 20px;
        }

        .changelog-content {
            color: #888888;
            line-height: 1.8;
            font-size: 0.9rem;
        }

        .changelog-content strong {
            color: #ffffff;
        }

        footer {
            padding: 60px 0 40px;
            border-top: 1px solid #1a1a1a;
        }

        .footer-content {
            display: flex;
            justify-content: space-between;
            align-items: start;
            flex-wrap: wrap;
            gap: 40px;
        }

        .footer-left {
            max-width: 500px;
        }

        .footer-text {
            color: #888888;
            line-height: 1.7;
            font-size: 0.9rem;
            margin-bottom: 20px;
        }

        .footer-text strong {
            color: #ffffff;
        }

        .copyright {
            color: #555555;
            font-size: 0.85rem;
        }

        @media (max-width: 968px) {
            .main-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .content-right {
                position: static;
            }

            .header-right {
                display: none;
            }
        }

        @media (max-width: 768px) {
            .container {
                padding: 0 20px;
            }

            header {
                padding: 30px 0 20px;
            }

            .main-content {
                padding: 50px 0;
            }

            h1 {
                font-size: 2rem;
            }

            .button-group {
                flex-direction: column;
                width: 100%;
            }

            .btn {
                width: 100%;
            }

            .features-grid {
                grid-template-columns: 1fr;
            }

            .section-title {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 480px) {
            .container {
                padding: 0 15px;
            }

            .logo {
                width: 40px;
                height: 40px;
            }

            .logo-text {
                font-size: 1.2rem;
            }

            h1 {
                font-size: 1.8rem;
            }

            .description {
                font-size: 1rem;
            }
        }