:root {
            --ysa473-primary: #FF7139;
            --ysa473-primary-dark: #E22020;
            --ysa473-secondary: #0060DF;
            --ysa473-accent: #9059FF;
            --ysa473-dark: #0b0823;
            --ysa473-light: #f9f9fb;
            --ysa473-text: #20123a;
            --ysa473-glass: rgba(255, 255, 255, 0.85);
            --ysa473-spacing-unit: 8px;
            --ysa473-max-width: 1320px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
            color: var(--ysa473-text);
            line-height: 1.6;
            background-color: var(--ysa473-light);
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* Layout Helpers */
        .ysa473-container {
            max-width: var(--ysa473-max-width);
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        .ysa473-flex {
            display: flex;
            flex-wrap: wrap;
        }

        .ysa473-flex-item {
            min-width: 0;
        }

        /* Typography */
        h1, h2, h3, h4 {
            line-height: 1.2;
            word-break: keep-all;
            white-space: normal;
        }

        .ysa473-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            font-weight: 900;
            margin-bottom: 24px;
            background: linear-gradient(135deg, var(--ysa473-primary), var(--ysa473-accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .ysa473-text-body {
            font-size: clamp(1rem, 1vw + 0.5rem, 1.25rem);
            line-height: 1.8;
            max-width: 800px;
            word-break: break-word;
        }

        /* Navigation */
        .ysa473-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--ysa473-glass);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            padding: 12px 0;
        }

        .ysa473-nav-wrapper {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .ysa473-logo {
            flex-shrink: 0;
        }

        .ysa473-logo img {
            height: 40px;
            display: block;
        }

        .ysa473-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 12px;
        }

        .ysa473-nav-item a {
            text-decoration: none;
            color: var(--ysa473-text);
            font-weight: 500;
            font-size: 14px;
            padding: 8px 12px;
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .ysa473-nav-item a:hover {
            color: var(--ysa473-primary);
            background: rgba(255, 113, 57, 0.08);
        }

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

        /* Hero Section - Unique Layered Design */
        .ysa473-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at top right, rgba(255, 113, 57, 0.05), transparent),
                        radial-gradient(circle at bottom left, rgba(144, 89, 255, 0.05), transparent);
            position: relative;
            overflow: hidden;
        }

        .ysa473-hero-content {
            position: relative;
            z-index: 2;
            text-align: center;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        /* Feature Section - Abstract Grid */
        .ysa473-feature-section {
            padding: 96px 0;
        }

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

        .ysa473-card {
            background: #fff;
            padding: 48px;
            border-radius: 24px;
            border: 1px solid rgba(0,0,0,0.03);
            transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .ysa473-card:hover {
            transform: translateY(-12px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
        }

        .ysa473-card-icon {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            background: rgba(255, 113, 57, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-size: 24px;
            color: var(--ysa473-primary);
        }

        /* Custom Tab Visualization - CSS based */
        .ysa473-tab-stack {
            height: 300px;
            position: relative;
            margin-top: 48px;
            width: 100%;
            max-width: 600px;
        }

        .ysa473-tab-mock {
            position: absolute;
            height: 60px;
            width: 80%;
            background: #fff;
            border-radius: 12px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.1);
            border-left: 6px solid var(--ysa473-primary);
            display: flex;
            align-items: center;
            padding: 0 20px;
            transition: all 0.3s ease;
        }

        .ysa473-tab-mock:nth-child(1) { top: 0; left: 0; z-index: 3; }
        .ysa473-tab-mock:nth-child(2) { top: 40px; left: 10%; z-index: 2; opacity: 0.8; }
        .ysa473-tab-mock:nth-child(3) { top: 80px; left: 20%; z-index: 1; opacity: 0.6; }

        .ysa473-tab-stack:hover .ysa473-tab-mock {
            transform: translateX(10px);
            opacity: 1;
        }

        /* Dynamic Content Section */
        .ysa473-dynamic-section {
            background: var(--ysa473-dark);
            color: #fff;
            padding: 96px 0;
            border-radius: 40px;
            margin: 48px 24px;
        }

        .ysa473-section-tag {
            color: var(--ysa473-primary);
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 2px;
            margin-bottom: 16px;
            display: block;
        }

        /* Buttons */
        .ysa473-btn {
            display: inline-block;
            padding: 16px 40px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 700;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            text-align: center;
        }

        .ysa473-btn-primary {
            background: var(--ysa473-primary);
            color: #fff;
            box-shadow: 0 10px 20px rgba(255, 113, 57, 0.3);
        }

        .ysa473-btn-primary:hover {
            background: var(--ysa473-primary-dark);
            transform: scale(1.05);
        }

        /* Footer */
        .ysa473-footer {
            padding: 96px 0 48px;
            background: #fff;
            border-top: 1px solid #eee;
        }

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

        .ysa473-footer-brand {
            font-size: 24px;
            font-weight: 800;
            color: var(--ysa473-primary);
            margin-bottom: 16px;
        }

        .ysa473-footer-link {
            display: block;
            color: #666;
            text-decoration: none;
            margin-bottom: 12px;
            transition: color 0.3s;
        }

        .ysa473-footer-link:hover {
            color: var(--ysa473-primary);
        }

        /* Responsive Breakpoints */
        @media (max-width: 768px) {
            .ysa473-nav-menu {
                display: none; /* In real scenarios, a burger menu would go here */
            }
            .ysa473-hero {
                padding: 120px 0 64px;
            }
            .ysa473-dynamic-section {
                margin: 24px 12px;
                border-radius: 20px;
            }
        }