:root {
            --ysa473-primary: #FF7139;
            --ysa473-primary-hover: #e65a2b;
            --ysa473-secondary: #0060DF;
            --ysa473-dark: #2B2A33;
            --ysa473-light: #F9F9FB;
            --ysa473-accent: #8000D7;
            --ysa473-gradient: linear-gradient(135deg, #FF9400 0%, #FF2F3B 100%);
            --ysa473-glass: rgba(255, 255, 255, 0.85);
            --ysa473-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --ysa473-radius: 16px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            background-color: var(--ysa473-light);
            color: var(--ysa473-dark);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: break-word;
        }

        /* Layout Container */
        .ysa473-container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* Navigation */
        .ysa473-nav-wrapper {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--ysa473-glass);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .ysa473-nav-inner {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .ysa473-logo {
            flex-shrink: 0;
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .ysa473-logo img {
            height: 40px;
            width: auto;
        }

        .ysa473-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 4px;
        }

        .ysa473-menu-item a {
            text-decoration: none;
            color: var(--ysa473-dark);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 14px;
            border-radius: 8px;
            transition: all 0.2s ease;
        }

        .ysa473-menu-item a:hover {
            background: rgba(0, 96, 223, 0.08);
            color: var(--ysa473-secondary);
        }

        .ysa473-menu-item.active a {
            background: var(--ysa473-secondary);
            color: #fff;
        }

        /* Hero Section */
        .ysa473-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: radial-gradient(circle at top right, rgba(255, 113, 57, 0.05), transparent 40%),
                        radial-gradient(circle at bottom left, rgba(0, 96, 223, 0.05), transparent 40%);
            text-align: center;
        }

        .ysa473-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .ysa473-hero-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255, 113, 57, 0.1);
            color: var(--ysa473-primary);
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .ysa473-hero-title {
            font-size: clamp(2rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--ysa473-dark);
        }

        .ysa473-hero-subtitle {
            font-size: clamp(1.1rem, 1vw + 0.8rem, 1.4rem);
            color: #555;
            margin-bottom: 40px;
            max-width: 750px;
            margin-left: auto;
            margin-right: auto;
        }

        .ysa473-btn-group {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 16px;
        }

        .ysa473-btn {
            display: inline-flex;
            align-items: center;
            padding: 14px 32px;
            border-radius: 12px;
            font-weight: 600;
            text-decoration: none;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            cursor: pointer;
        }

        .ysa473-btn-primary {
            background: var(--ysa473-gradient);
            color: #fff;
            box-shadow: 0 4px 15px rgba(255, 113, 57, 0.3);
        }

        .ysa473-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 113, 57, 0.4);
        }

        /* Features Section - Unique Diagonal Grid */
        .ysa473-section {
            padding: 96px 0;
        }

        .ysa473-section-title {
            text-align: center;
            margin-bottom: 64px;
        }

        .ysa473-section-title h2 {
            font-size: clamp(1.8rem, 3vw + 0.5rem, 2.5rem);
            margin-bottom: 16px;
        }

        .ysa473-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .ysa473-card {
            background: #fff;
            padding: 40px;
            border-radius: var(--ysa473-radius);
            border: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
            min-width: 0;
        }

        .ysa473-card:hover {
            transform: translateY(-8px);
            box-shadow: var(--ysa473-shadow);
        }

        .ysa473-card-icon {
            font-size: 2.5rem;
            margin-bottom: 24px;
            display: inline-block;
        }

        .ysa473-card h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--ysa473-secondary);
        }

        /* Blueprint Section */
        .ysa473-blueprint {
            background: var(--ysa473-dark);
            color: #fff;
            border-radius: 32px;
            padding: 80px 64px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            margin-bottom: 96px;
        }

        .ysa473-blueprint-text {
            flex: 1;
            min-width: 300px;
        }

        .ysa473-blueprint-visual {
            flex: 1.2;
            min-width: 300px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 16px;
            padding: 24px;
            font-family: 'Courier New', Courier, monospace;
            font-size: 0.9rem;
            color: #a0aec0;
            position: relative;
        }

        .ysa473-code-line {
            margin-bottom: 8px;
            display: flex;
            gap: 12px;
        }

        .ysa473-code-line span:first-child {
            color: #4a5568;
            user-select: none;
        }

        .ysa473-highlight {
            color: var(--ysa473-primary);
        }

        /* Dynamic Articles */
        .ysa473-articles-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
            gap: 24px;
        }

        .ysa473-article-item {
            display: flex;
            flex-wrap: wrap;
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .ysa473-article-content {
            padding: 24px;
            flex: 1;
        }

        .ysa473-article-tag {
            font-size: 0.75rem;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--ysa473-secondary);
            font-weight: 700;
            margin-bottom: 12px;
            display: block;
        }

        /* Footer */
        .ysa473-footer {
            background: #fff;
            padding: 80px 0 40px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
        }

        .ysa473-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .ysa473-footer-brand h4 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--ysa473-primary);
        }

        .ysa473-footer-links h5 {
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

        .ysa473-footer-links ul {
            list-style: none;
        }

        .ysa473-footer-links li {
            margin-bottom: 12px;
        }

        .ysa473-footer-links a {
            text-decoration: none;
            color: #666;
            transition: color 0.2s;
        }

        .ysa473-footer-links a:hover {
            color: var(--ysa473-secondary);
        }

        .ysa473-copyright {
            text-align: center;
            padding-top: 40px;
            border-top: 1px solid rgba(0, 0, 0, 0.05);
            color: #999;
            font-size: 0.9rem;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .ysa473-nav-inner {
                height: auto;
                padding: 16px 0;
            }
            .ysa473-menu {
                width: 100%;
                margin-top: 16px;
                justify-content: center;
            }
            .ysa473-hero {
                padding-top: 140px;
            }
            .ysa473-blueprint {
                padding: 40px 24px;
            }
            .ysa473-articles-grid {
                grid-template-columns: 1fr;
            }
        }