:root {
            --su4j14-primary: #ff8c00;
            --su4j14-secondary: #2c3e50;
            --su4j14-accent: #00a8ff;
            --su4j14-bg-light: #f8f9fa;
            --su4j14-bg-dark: #1a1a1a;
            --su4j14-text-main: #333333;
            --su4j14-text-muted: #666666;
            --su4j14-white: #ffffff;
            --su4j14-success: #27ae60;
            --su4j14-warning: #f1c40f;
            --su4j14-danger: #e74c3c;
            --su4j14-shadow: 0 10px 30px rgba(0,0,0,0.08);
            --su4j14-radius: 16px;
        }

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
            line-height: 1.6;
            color: var(--su4j14-text-main);
            background-color: var(--su4j14-white);
            word-break: break-word;
            overflow-x: hidden;
        }

        /* 布局容器 */
        .su4j14-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 24px;
            width: 100%;
        }

        /* 导航栏 */
        .su4j14-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(0,0,0,0.05);
            transition: all 0.3s ease;
        }

        .su4j14-nav {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            padding: 16px 0;
            min-height: 72px;
        }

        .su4j14-logo {
            flex: 0 0 auto;
            min-width: 0;
        }

        .su4j14-logo img {
            height: 40px;
            display: block;
        }

        .su4j14-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            margin-left: auto;
        }

        .su4j14-menu li {
            min-width: 0;
        }

        .su4j14-menu a {
            text-decoration: none;
            color: var(--su4j14-secondary);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.2s;
        }

        .su4j14-menu a:hover {
            color: var(--su4j14-primary);
            background: rgba(255, 140, 0, 0.05);
        }

        .su4j14-menu a.active {
            color: var(--su4j14-white);
            background: var(--su4j14-primary);
        }

        /* Hero 区域 - 独特对角线分割设计 */
        .su4j14-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            background: linear-gradient(135deg, #1a1a1a 0%, #2c3e50 100%);
            color: var(--su4j14-white);
            position: relative;
            overflow: hidden;
        }

        .su4j14-hero::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 100px;
            background: var(--su4j14-white);
            clip-path: polygon(0 100%, 100% 100%, 100% 0);
        }

        .su4j14-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 48px;
        }

        .su4j14-hero-text {
            flex: 1 1 500px;
            min-width: 0;
        }

        .su4j14-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(to right, #ffffff, #ff8c00);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .su4j14-hero-subtitle {
            font-size: clamp(1rem, 1.2vw + 0.5rem, 1.25rem);
            color: rgba(255,255,255,0.8);
            margin-bottom: 32px;
            max-width: 600px;
        }

        .su4j14-hero-visual {
            flex: 1 1 400px;
            min-width: 0;
            display: flex;
            justify-content: center;
            position: relative;
        }

        /* 模拟扫描视觉效果 */
        .su4j14-scanner-box {
            width: 300px;
            height: 300px;
            border: 2px solid var(--su4j14-primary);
            border-radius: 50%;
            position: relative;
            background: radial-gradient(circle, rgba(255,140,0,0.1) 0%, transparent 70%);
            animation: su4j14-pulse 3s infinite;
        }

        .su4j14-scanner-line {
            position: absolute;
            top: 50%;
            left: 50%;
            width: 50%;
            height: 2px;
            background: linear-gradient(to right, transparent, var(--su4j14-primary));
            transform-origin: left center;
            animation: su4j14-rotate 4s linear infinite;
        }

        @keyframes su4j14-rotate {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        @keyframes su4j14-pulse {
            0% { transform: scale(0.95); opacity: 0.5; }
            50% { transform: scale(1.05); opacity: 1; }
            100% { transform: scale(0.95); opacity: 0.5; }
        }

        /* 按钮设计 */
        .su4j14-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .su4j14-btn {
            display: inline-block;
            padding: 16px 32px;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            text-align: center;
            min-width: 180px;
        }

        .su4j14-btn-primary {
            background: var(--su4j14-primary);
            color: var(--su4j14-white);
            box-shadow: 0 4px 15px rgba(255, 140, 0, 0.3);
        }

        .su4j14-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 140, 0, 0.4);
        }

        .su4j14-btn-outline {
            border: 2px solid rgba(255,255,255,0.3);
            color: var(--su4j14-white);
        }

        .su4j14-btn-outline:hover {
            background: rgba(255,255,255,0.1);
            border-color: var(--su4j14-white);
        }

        /* 核心技术区块 */
        .su4j14-tech-section {
            padding: 96px 0;
            background-color: var(--su4j14-white);
        }

        .su4j14-section-head {
            text-align: center;
            margin-bottom: 64px;
        }

        .su4j14-section-head h2 {
            font-size: clamp(1.75rem, 3vw, 2.5rem);
            color: var(--su4j14-secondary);
            margin-bottom: 16px;
        }

        .su4j14-tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .su4j14-tech-card {
            background: var(--su4j14-bg-light);
            padding: 40px;
            border-radius: var(--su4j14-radius);
            transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
            border: 1px solid rgba(0,0,0,0.03);
            display: flex;
            flex-direction: column;
        }

        .su4j14-tech-card:hover {
            transform: translateY(-10px);
            background: var(--su4j14-white);
            box-shadow: var(--su4j14-shadow);
        }

        .su4j14-tech-icon {
            font-size: 32px;
            margin-bottom: 24px;
            color: var(--su4j14-primary);
        }

        .su4j14-tech-name {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--su4j14-secondary);
        }

        .su4j14-tech-desc {
            font-size: 15px;
            color: var(--su4j14-text-muted);
            margin-bottom: 20px;
            flex-grow: 1;
        }

        .su4j14-tech-benefit {
            font-size: 14px;
            font-weight: 600;
            color: var(--su4j14-success);
            padding-top: 16px;
            border-top: 1px dashed rgba(0,0,0,0.1);
        }

        /* 工作流程区块 */
        .su4j14-workflow-section {
            padding: 96px 0;
            background: var(--su4j14-bg-light);
        }

        .su4j14-workflow-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 24px;
            position: relative;
        }

        .su4j14-step {
            flex: 1 1 300px;
            min-width: 0;
            background: var(--su4j14-white);
            padding: 48px 32px;
            border-radius: var(--su4j14-radius);
            position: relative;
            box-shadow: 0 4px 10px rgba(0,0,0,0.02);
        }

        .su4j14-step-num {
            position: absolute;
            top: -20px;
            left: 32px;
            width: 50px;
            height: 50px;
            background: var(--su4j14-secondary);
            color: var(--su4j14-white);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 20px;
            box-shadow: 0 10px 20px rgba(0,0,0,0.1);
        }

        .su4j14-step-phase {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            margin-top: 10px;
        }

        /* 版本对比区块 */
        .su4j14-tier-section {
            padding: 96px 0;
        }

        .su4j14-tier-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            align-items: stretch;
        }

        .su4j14-tier-card {
            flex: 1 1 320px;
            min-width: 0;
            border: 1px solid rgba(0,0,0,0.08);
            border-radius: var(--su4j14-radius);
            padding: 40px;
            display: flex;
            flex-direction: column;
            transition: all 0.3s ease;
        }

        .su4j14-tier-card.featured {
            border-color: var(--su4j14-primary);
            box-shadow: 0 20px 40px rgba(255, 140, 0, 0.1);
            transform: scale(1.05);
            z-index: 2;
            background: var(--su4j14-white);
        }

        .su4j14-tier-name {
            font-size: 1.5rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .su4j14-tier-target {
            color: var(--su4j14-text-muted);
            font-size: 14px;
            margin-bottom: 32px;
        }

        .su4j14-tier-features {
            list-style: none;
            margin-bottom: 40px;
            flex-grow: 1;
        }

        .su4j14-tier-features li {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            font-size: 15px;
            display: flex;
            align-items: center;
        }

        .su4j14-tier-features li::before {
            content: '✓';
            color: var(--su4j14-success);
            margin-right: 12px;
            font-weight: bold;
        }

        /* 页脚 */
        .su4j14-footer {
            background: var(--su4j14-secondary);
            color: rgba(255,255,255,0.7);
            padding: 80px 0 40px;
            font-size: 14px;
        }

        .su4j14-footer-content {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
            margin-bottom: 64px;
        }

        .su4j14-footer-brand {
            flex: 1 1 300px;
            min-width: 0;
        }

        .su4j14-footer-brand-name {
            color: var(--su4j14-white);
            font-size: 24px;
            font-weight: 800;
            margin-bottom: 20px;
        }

        .su4j14-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 64px;
        }

        .su4j14-footer-column h4 {
            color: var(--su4j14-white);
            margin-bottom: 24px;
            font-size: 16px;
        }

        .su4j14-footer-column ul {
            list-style: none;
        }

        .su4j14-footer-column li {
            margin-bottom: 12px;
        }

        .su4j14-footer-column a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s;
        }

        .su4j14-footer-column a:hover {
            color: var(--su4j14-primary);
        }

        .su4j14-footer-bottom {
            padding-top: 40px;
            border-top: 1px solid rgba(255,255,255,0.1);
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .su4j14-menu {
                display: none; /* 简化演示，实际可添加汉堡菜单 */
            }
            .su4j14-hero-text {
                text-align: center;
            }
            .su4j14-hero-visual {
                display: none;
            }
            .su4j14-btn-group {
                justify-content: center;
            }
            .su4j14-tier-card.featured {
                transform: none;
            }
            .su4j14-workflow-container {
                flex-direction: column;
            }
        }

        /* 动态内容标记 */
        .su4j14-news-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 24px;
        }