:root {
            --ysa473-primary: #FF7139;
            --ysa473-primary-hover: #e65100;
            --ysa473-secondary: #0060DF;
            --ysa473-dark: #0b0823;
            --ysa473-light: #f9f9fb;
            --ysa473-text: #20123a;
            --ysa473-text-muted: #5b5b66;
            --ysa473-bg-gradient: linear-gradient(165deg, #0b0823 0%, #1a1a3a 100%);
            --ysa473-card-bg: rgba(255, 255, 255, 0.05);
            --ysa473-gap: 8px;
        }

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

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

        /* 导航栏设计 */
        .ysa473-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .ysa473-nav-container {
            max-width: 1300px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
        }

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

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

        .ysa473-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 24px;
            margin-left: 40px;
        }

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

        .ysa473-nav-link {
            text-decoration: none;
            color: var(--ysa473-text-muted);
            font-weight: 500;
            font-size: 15px;
            transition: color 0.3s ease;
            position: relative;
            padding: 8px 0;
        }

        .ysa473-nav-link:hover, .ysa473-nav-link.active {
            color: var(--ysa473-secondary);
        }

        .ysa473-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--ysa473-secondary);
        }

        /* Hero 区域：独特的对角线切割与居中设计 */
        .ysa473-hero {
            position: relative;
            padding: 160px 24px 100px;
            background: var(--ysa473-bg-gradient);
            color: white;
            overflow: hidden;
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            text-align: center;
        }

        .ysa473-hero::before {
            content: "64";
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 40vw;
            font-weight: 900;
            color: rgba(255, 255, 255, 0.03);
            z-index: 0;
            line-height: 1;
        }

        .ysa473-hero-content {
            position: relative;
            z-index: 2;
            max-width: 860px;
            min-width: 0;
        }

        .ysa473-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4.5rem);
            line-height: 1.1;
            margin-bottom: 24px;
            font-weight: 800;
            letter-spacing: -1px;
            word-break: break-word;
        }

        .ysa473-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 48px;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
            word-break: break-word;
        }

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

        .ysa473-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 18px 40px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            min-width: 200px;
            font-size: 18px;
        }

        .ysa473-btn-primary {
            background: var(--ysa473-primary);
            color: white;
            box-shadow: 0 10px 30px rgba(255, 113, 57, 0.3);
        }

        .ysa473-btn-primary:hover {
            background: var(--ysa473-primary-hover);
            transform: translateY(-3px);
            box-shadow: 0 15px 40px rgba(255, 113, 57, 0.4);
        }

        .ysa473-btn-outline {
            background: transparent;
            border: 2px solid rgba(255, 255, 255, 0.3);
            color: white;
        }

        .ysa473-btn-outline:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: white;
        }

        /* 核心优势区域 */
        .ysa473-section {
            padding: 96px 24px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .ysa473-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
            margin-top: 64px;
        }

        .ysa473-card {
            background: white;
            padding: 48px;
            border-radius: 24px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
            transition: all 0.4s ease;
            min-width: 0;
            border: 1px solid rgba(0, 0, 0, 0.05);
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .ysa473-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
        }

        .ysa473-card-icon {
            font-size: 40px;
            margin-bottom: 8px;
            color: var(--ysa473-secondary);
        }

        .ysa473-card h3 {
            font-size: 24px;
            font-weight: 700;
        }

        /* 性能对比区 */
        .ysa473-performance-box {
            background: #fff;
            border-radius: 32px;
            padding: 64px;
            margin: 64px 0;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
            box-shadow: 0 30px 60px rgba(0, 0, 0, 0.05);
        }

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

        .ysa473-perf-visual {
            flex: 1;
            min-width: 300px;
            background: var(--ysa473-light);
            padding: 40px;
            border-radius: 20px;
        }

        .ysa473-bar-container {
            margin: 20px 0;
        }

        .ysa473-bar-label {
            display: flex;
            justify-content: space-between;
            margin-bottom: 8px;
            font-weight: 600;
        }

        .ysa473-bar-bg {
            height: 12px;
            background: #e0e0e0;
            border-radius: 6px;
            overflow: hidden;
        }

        .ysa473-bar-fill {
            height: 100%;
            background: var(--ysa473-secondary);
            width: 0;
            transition: width 1.5s ease-out;
        }

        .ysa473-bar-fill.ysa473-orange {
            background: var(--ysa473-primary);
        }

        /* 动态内容标记区块 */
        .ysa473-news-section {
            background: #fff;
            border-radius: 32px;
            padding: 64px;
            margin: 48px 24px;
        }

        .ysa473-section-title {
            text-align: center;
            font-size: clamp(1.8rem, 3vw, 2.5rem);
            margin-bottom: 48px;
            font-weight: 800;
        }

        /* 页脚设计 */
        .ysa473-footer {
            background: #0b0823;
            color: rgba(255, 255, 255, 0.6);
            padding: 80px 24px 40px;
        }

        .ysa473-footer-grid {
            max-width: 1300px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .ysa473-footer-brand h2 {
            color: white;
            font-size: 24px;
            margin-bottom: 16px;
        }

        .ysa473-footer-links h4 {
            color: white;
            margin-bottom: 24px;
            font-size: 18px;
        }

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

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

        .ysa473-footer-links a {
            color: inherit;
            text-decoration: none;
            transition: color 0.3s ease;
        }

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

        .ysa473-copyright {
            max-width: 1300px;
            margin: 0 auto;
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .ysa473-nav-menu {
                display: none; /* 简化移动端显示 */
            }
            
            .ysa473-hero {
                padding-top: 120px;
            }

            .ysa473-performance-box {
                padding: 32px;
            }
            
            .ysa473-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 图形辅助 */
        .ysa473-icon-box {
            width: 64px;
            height: 64px;
            background: rgba(0, 96, 223, 0.1);
            border-radius: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
        }
        
        .ysa473-icon-box svg {
            width: 32px;
            height: 32px;
            fill: var(--ysa473-secondary);
        }