:root {
            --ysa473-primary: #FF7139;
            --ysa473-primary-gradient: linear-gradient(90deg, #FF9400 0%, #FF7139 100%);
            --ysa473-secondary: #0060DF;
            --ysa473-dark: #2B2A33;
            --ysa473-dark-alt: #1C1B22;
            --ysa473-light: #F9F9FB;
            --ysa473-text: #15141A;
            --ysa473-text-muted: #5B5B66;
            --ysa473-container-width: 1100px;
            --ysa473-radius: 16px;
            --ysa473-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

        a {
            text-decoration: none;
            color: inherit;
            transition: var(--ysa473-transition);
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

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

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

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

        /* Navigation */
        .ysa473-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: var(--ysa473-transition);
        }

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

        .ysa473-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

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

        .ysa473-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
        }

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

        .ysa473-nav-link {
            padding: 8px 12px;
            font-size: 14px;
            font-weight: 500;
            border-radius: 8px;
            color: var(--ysa473-text-muted);
            white-space: nowrap;
        }

        .ysa473-nav-link:hover {
            color: var(--ysa473-primary);
            background: rgba(255, 113, 57, 0.05);
        }

        .ysa473-nav-link.ysa473-active {
            color: var(--ysa473-primary);
            background: rgba(255, 113, 57, 0.1);
        }

        /* Hero Section */
        .ysa473-hero {
            padding: 160px 0 96px;
            background: radial-gradient(circle at top right, rgba(255, 113, 57, 0.08), transparent),
                        radial-gradient(circle at bottom left, rgba(0, 96, 223, 0.05), transparent);
            position: relative;
            overflow: hidden;
        }

        .ysa473-hero-grid {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .ysa473-hero-content {
            flex: 1 1 500px;
            min-width: 0;
            word-break: break-word;
        }

        .ysa473-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 24px;
            color: var(--ysa473-dark);
            white-space: normal;
        }

        .ysa473-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--ysa473-text-muted);
            margin-bottom: 48px;
            max-width: 600px;
            line-height: 1.6;
        }

        .ysa473-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            position: relative;
        }

        .ysa473-hero-image-box {
            border-radius: var(--ysa473-radius);
            overflow: hidden;
            box-shadow: 0 32px 64px rgba(0, 0, 0, 0.15);
            transform: perspective(1000px) rotateY(-5deg);
            transition: var(--ysa473-transition);
        }

        .ysa473-hero-image-box:hover {
            transform: perspective(1000px) rotateY(0deg);
        }

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

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

        .ysa473-section-title {
            font-size: clamp(2rem, 3vw + 0.5rem, 2.8rem);
            font-weight: 700;
            margin-bottom: 16px;
        }

        .ysa473-grid-features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .ysa473-feature-card {
            background: #fff;
            padding: 40px;
            border-radius: var(--ysa473-radius);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            transition: var(--ysa473-transition);
            border: 1px solid rgba(0, 0, 0, 0.05);
        }

        .ysa473-feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
        }

        .ysa473-feature-icon {
            font-size: 48px;
            margin-bottom: 24px;
            display: inline-block;
        }

        .ysa473-feature-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--ysa473-dark);
        }

        /* Visual Showcase Split */
        .ysa473-showcase {
            background: var(--ysa473-dark-alt);
            color: #fff;
            padding: 96px 0;
            border-radius: 48px;
            margin: 48px 24px;
        }

        .ysa473-split {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
        }

        .ysa473-split-image {
            flex: 1 1 450px;
            min-width: 0;
        }

        .ysa473-split-image img {
            border-radius: 24px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }

        .ysa473-split-text {
            flex: 1 1 400px;
            min-width: 0;
        }

        .ysa473-btn {
            display: inline-flex;
            align-items: center;
            padding: 16px 32px;
            background: var(--ysa473-primary-gradient);
            color: #fff;
            font-weight: 600;
            border-radius: 50px;
            font-size: 18px;
            box-shadow: 0 8px 20px rgba(255, 113, 57, 0.3);
            margin-top: 32px;
        }

        .ysa473-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 12px 24px rgba(255, 113, 57, 0.4);
        }

        /* Dynamic Content */
        .ysa473-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
            gap: 24px;
        }

        .ysa473-news-card {
            background: #fff;
            border-radius: 12px;
            overflow: hidden;
            border: 1px solid #eee;
        }

        .ysa473-news-info {
            padding: 24px;
        }

        .ysa473-news-tag {
            font-size: 12px;
            text-transform: uppercase;
            color: var(--ysa473-primary);
            font-weight: 700;
            margin-bottom: 8px;
            display: block;
        }

        /* Footer */
        .ysa473-footer {
            background: var(--ysa473-dark);
            color: rgba(255, 255, 255, 0.7);
            padding: 96px 0 48px;
            position: relative;
        }

        .ysa473-footer-art {
            position: absolute;
            top: 0;
            right: 0;
            width: 300px;
            opacity: 0.1;
            pointer-events: none;
        }

        .ysa473-footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
            margin-bottom: 64px;
        }

        .ysa473-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .ysa473-footer-title {
            color: #fff;
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 24px;
        }

        .ysa473-footer-links {
            flex: 2 1 600px;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .ysa473-footer-col {
            flex: 1 1 150px;
            min-width: 0;
        }

        .ysa473-footer-col h4 {
            color: #fff;
            margin-bottom: 24px;
        }

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

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

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

        .ysa473-copyright {
            padding-top: 48px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 14px;
        }

        /* Responsive */
        @media (max-width: 768px) {
            .ysa473-nav-menu {
                display: none; /* In a real project, add a mobile menu toggle */
            }
            .ysa473-hero {
                padding-top: 120px;
            }
            .ysa473-showcase {
                border-radius: 0;
                margin: 48px 0;
            }
            .ysa473-hero-grid, .ysa473-split {
                flex-direction: column;
                text-align: center;
            }
            .ysa473-hero-image-box {
                transform: none;
            }
        }