/* 基础变量 */
        :root {
            --su4j14-primary: #FF8C00;
            --su4j14-primary-dark: #E67E00;
            --su4j14-secondary: #1E293B;
            --su4j14-bg-light: #F8FAFC;
            --su4j14-text-main: #334155;
            --su4j14-text-light: #64748B;
            --su4j14-white: #FFFFFF;
            --su4j14-shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.1);
            --su4j14-radius: 16px;
            --su4j14-container: 1300px;
        }

        /* 基础样式复位 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            color: var(--su4j14-text-main);
            background-color: var(--su4j14-bg-light);
            line-height: 1.7;
            overflow-x: hidden;
            word-break: keep-all;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        ul {
            list-style: none;
        }

        /* 容器规范 */
        .su4j14-container {
            max-width: var(--su4j14-container);
            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, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
            transition: all 0.4s ease;
        }

        .su4j14-nav-wrapper {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            height: 80px;
        }

        .su4j14-logo {
            display: flex;
            align-items: center;
            min-width: 0;
        }

        .su4j14-logo img {
            height: 40px;
            width: auto;
        }

        .su4j14-nav-menu {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            min-width: 0;
        }

        .su4j14-nav-item a {
            padding: 8px 16px;
            font-size: 15px;
            font-weight: 500;
            border-radius: 8px;
            color: var(--su4j14-secondary);
        }

        .su4j14-nav-item a:hover {
            background: rgba(255, 140, 0, 0.1);
            color: var(--su4j14-primary);
        }

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

        /* Hero 区域 - 独特对角线分割设计 */
        .su4j14-hero {
            position: relative;
            padding-top: 160px;
            padding-bottom: 100px;
            background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
            color: var(--su4j14-white);
            overflow: hidden;
        }

        .su4j14-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: linear-gradient(45deg, transparent 0%, rgba(255, 140, 0, 0.05) 100%);
            transform: skewX(-20deg) translateX(20%);
        }

        .su4j14-hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            min-width: 0;
        }

        .su4j14-hero-text {
            flex: 1;
            min-width: 320px;
            padding-right: 48px;
            word-break: break-word;
        }

        .su4j14-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 3.5rem);
            line-height: 1.2;
            margin-bottom: 24px;
            font-weight: 800;
        }

        .su4j14-hero-subtitle {
            font-size: clamp(1rem, 1.2vw + 0.5rem, 1.25rem);
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .su4j14-hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

        .su4j14-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 16px;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            border: none;
        }

        .su4j14-btn-primary {
            background: var(--su4j14-primary);
            color: var(--su4j14-white);
            box-shadow: 0 4px 14px rgba(255, 140, 0, 0.4);
        }

        .su4j14-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255, 140, 0, 0.6);
            background: var(--su4j14-primary-dark);
        }

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

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

        /* 核心技术区块 */
        .su4j14-section {
            padding: 96px 0;
            word-break: break-word;
        }

        .su4j14-section-head {
            text-align: center;
            margin-bottom: 64px;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }

        .su4j14-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(255, 140, 0, 0.1);
            color: var(--su4j14-primary);
            border-radius: 4px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
            text-transform: uppercase;
        }

        .su4j14-section-title {
            font-size: clamp(1.5rem, 2.5vw + 0.5rem, 2.5rem);
            color: var(--su4j14-secondary);
            margin-bottom: 16px;
        }

        .su4j14-tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 32px;
        }

        .su4j14-tech-card {
            background: var(--su4j14-white);
            padding: 40px;
            border-radius: var(--su4j14-radius);
            box-shadow: var(--su4j14-shadow);
            transition: all 0.4s ease;
            border: 1px solid rgba(0, 0, 0, 0.03);
            display: flex;
            flex-direction: column;
        }

        .su4j14-tech-card:hover {
            transform: translateY(-10px);
            border-color: var(--su4j14-primary);
        }

        .su4j14-tech-icon {
            width: 60px;
            height: 60px;
            background: var(--su4j14-bg-light);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 24px;
            font-size: 24px;
            color: var(--su4j14-primary);
            font-weight: bold;
        }

        .su4j14-tech-name {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--su4j14-secondary);
        }

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

        .su4j14-tech-benefit {
            font-size: 14px;
            padding: 12px;
            background: #FFF7ED;
            border-left: 4px solid var(--su4j14-primary);
            color: #C2410C;
        }

        /* 恢复工作流区块 - 卡片式横向滑动效果 */
        .su4j14-workflow-section {
            background: var(--su4j14-secondary);
            color: var(--su4j14-white);
            border-radius: 40px;
            margin: 0 24px;
            padding: 80px 48px;
        }

        .su4j14-workflow-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
        }

        .su4j14-workflow-step {
            flex: 1;
            min-width: 280px;
            position: relative;
        }

        .su4j14-step-num {
            font-size: 64px;
            font-weight: 900;
            opacity: 0.1;
            line-height: 1;
            margin-bottom: -20px;
            display: block;
        }

        .su4j14-step-phase {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--su4j14-primary);
        }

        .su4j14-step-action {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.7);
        }

        /* 版本对比表格 */
        .su4j14-pricing-section {
            background: var(--su4j14-bg-light);
        }

        .su4j14-tier-wrapper {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 32px;
        }

        .su4j14-tier-card {
            background: var(--su4j14-white);
            padding: 48px;
            border-radius: var(--su4j14-radius);
            text-align: center;
            position: relative;
            transition: all 0.3s ease;
        }

        .su4j14-tier-card.featured {
            transform: scale(1.05);
            border: 2px solid var(--su4j14-primary);
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            z-index: 5;
        }

        .su4j14-tier-name {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 8px;
        }

        .su4j14-tier-user {
            font-size: 14px;
            color: var(--su4j14-text-light);
            margin-bottom: 32px;
            display: block;
        }

        .su4j14-feature-list {
            margin-bottom: 40px;
            text-align: left;
        }

        .su4j14-feature-item {
            margin-bottom: 12px;
            font-size: 15px;
            display: flex;
            align-items: center;
        }

        .su4j14-feature-item::before {
            content: '✓';
            margin-right: 12px;
            color: #10B981;
            font-weight: bold;
        }

        /* 页脚 */
        .su4j14-footer {
            background: #0F172A;
            color: rgba(255, 255, 255, 0.6);
            padding: 80px 0 40px;
        }

        .su4j14-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 48px;
            margin-bottom: 64px;
        }

        .su4j14-footer-brand h3 {
            color: var(--su4j14-white);
            font-size: 28px;
            margin-bottom: 20px;
        }

        .su4j14-footer-links h4 {
            color: var(--su4j14-white);
            margin-bottom: 24px;
            font-size: 18px;
        }

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

        .su4j14-footer-bottom {
            padding-top: 40px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            text-align: center;
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 1024px) {
            .su4j14-workflow-section {
                margin: 0;
                border-radius: 0;
            }
        }

        @media (max-width: 768px) {
            .su4j14-nav-menu {
                display: none; /* 简化演示：移动端可使用汉堡菜单 */
            }
            .su4j14-hero-text {
                padding-right: 0;
                text-align: center;
            }
            .su4j14-hero-actions {
                justify-content: center;
            }
            .su4j14-tier-card.featured {
                transform: scale(1);
            }
            .su4j14-section {
                padding: 64px 0;
            }
        }