:root {
            --ejqv-primary: #FF5722;
            --ejqv-primary-glow: rgba(255, 87, 34, 0.15);
            --ejqv-dark: #1D1D1F;
            --ejqv-light: #F5F5F7;
            --ejqv-text: #333333;
            --ejqv-text-muted: #6E6E73;
            --ejqv-white: #FFFFFF;
            --ejqv-transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            --ejqv-container-width: 94vw;
            --ejqv-radius: 20px;
        }

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

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

        /* 导航系统 - 浮动式设计 */
        .ejqv-nav-wrapper {
            position: fixed;
            top: 24px;
            left: 50%;
            transform: translateX(-50%);
            width: 90%;
            max-width: 1100px;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(20px);
            border: 1px solid rgba(0,0,0,0.05);
            border-radius: 50px;
            padding: 10px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            box-shadow: 0 4px 30px rgba(0,0,0,0.05);
        }

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

        .ejqv-logo img {
            height: 32px;
            width: auto;
        }

        .ejqv-nav-links {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            list-style: none;
            min-width: 0;
        }

        .ejqv-nav-links a {
            text-decoration: none;
            color: var(--ejqv-text);
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--ejqv-transition);
        }

        .ejqv-nav-links a:hover {
            color: var(--ejqv-primary);
        }

        /* Hero 区块 - 极简大气 */
        .ejqv-hero {
            padding-top: 160px;
            padding-bottom: 96px;
            text-align: center;
            background: radial-gradient(circle at top right, var(--ejqv-primary-glow), transparent 40%),
                        radial-gradient(circle at bottom left, var(--ejqv-primary-glow), transparent 40%);
        }

        .ejqv-container {
            max-width: var(--ejqv-container-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .ejqv-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 5rem);
            font-weight: 800;
            line-height: 1.1;
            margin-bottom: 32px;
            color: var(--ejqv-dark);
            letter-spacing: -0.02em;
            word-break: break-word;
        }

        .ejqv-hero-subtitle {
            font-size: clamp(1.1rem, 1.5vw + 0.5rem, 1.5rem);
            color: var(--ejqv-text-muted);
            max-width: 800px;
            margin: 0 auto 48px;
            word-break: break-word;
        }

        .ejqv-cta-group {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .ejqv-btn {
            padding: 18px 48px;
            border-radius: 40px;
            font-size: 1.1rem;
            font-weight: 600;
            text-decoration: none;
            transition: var(--ejqv-transition);
            display: inline-block;
        }

        .ejqv-btn-primary {
            background: var(--ejqv-primary);
            color: var(--ejqv-white);
            box-shadow: 0 10px 20px rgba(255, 87, 34, 0.3);
        }

        .ejqv-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 15px 30px rgba(255, 87, 34, 0.4);
        }

        /* 核心优势 - 非对称网格 */
        .ejqv-section {
            padding: 96px 0;
            overflow: hidden;
        }

        .ejqv-grid-feature {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(min(100%, 400px), 1fr));
            gap: 32px;
            margin-top: 64px;
        }

        .ejqv-card {
            background: var(--ejqv-light);
            padding: 48px;
            border-radius: var(--ejqv-radius);
            transition: var(--ejqv-transition);
            display: flex;
            flex-direction: column;
            justify-content: space-between;
            min-height: 420px;
            position: relative;
            overflow: hidden;
        }

        .ejqv-card:hover {
            background: var(--ejqv-white);
            box-shadow: 0 40px 80px rgba(0,0,0,0.08);
            transform: scale(1.02);
        }

        .ejqv-card-tag {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            color: var(--ejqv-primary);
            margin-bottom: 16px;
            display: block;
        }

        .ejqv-card-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 24px;
            line-height: 1.2;
        }

        .ejqv-feature-list {
            list-style: none;
        }

        .ejqv-feature-item {
            padding: 12px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            font-size: 1.05rem;
            color: var(--ejqv-text-muted);
        }

        .ejqv-productivity-badge {
            margin-top: 32px;
            padding: 12px 20px;
            background: var(--ejqv-white);
            border-radius: 12px;
            display: inline-flex;
            align-items: center;
            font-weight: 600;
            color: var(--ejqv-primary);
            border: 1px solid var(--ejqv-primary-glow);
        }

        /* AI 动态展示区 */
        .ejqv-ai-showcase {
            background: var(--ejqv-dark);
            color: var(--ejqv-white);
            border-radius: 40px;
            padding: 80px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 64px;
            margin-bottom: 96px;
        }

        .ejqv-ai-content {
            flex: 1;
            min-width: 300px;
        }

        .ejqv-ai-content h2 {
            font-size: clamp(2rem, 3vw, 3.5rem);
            margin-bottom: 24px;
            background: linear-gradient(90deg, #FF5722, #FFAB91);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .ejqv-ai-visual {
            flex: 1;
            min-width: 300px;
            height: 400px;
            background: linear-gradient(45deg, #2C2C2E, #3A3A3C);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .ejqv-ai-visual::after {
            content: "";
            position: absolute;
            width: 80%;
            height: 80%;
            border: 2px solid var(--ejqv-primary);
            border-radius: 50%;
            opacity: 0.2;
            animation: pulse 4s infinite;
        }

        @keyframes pulse {
            0% { transform: scale(0.8); opacity: 0.2; }
            50% { transform: scale(1.2); opacity: 0.1; }
            100% { transform: scale(0.8); opacity: 0.2; }
        }

        /* 资讯区块标记 */
        .ejqv-dynamic-section {
            background: #FAFAFA;
            border-radius: var(--ejqv-radius);
            padding: 64px;
        }

        .ejqv-section-header {
            margin-bottom: 48px;
            display: flex;
            justify-content: space-between;
            align-items: flex-end;
            flex-wrap: wrap;
            gap: 24px;
        }

        .ejqv-section-header h2 {
            font-size: 2.5rem;
            font-weight: 800;
        }

        /* 底部设计 */
        .ejqv-footer {
            background: var(--ejqv-white);
            padding: 96px 0 48px;
            border-top: 1px solid #EEE;
        }

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

        .ejqv-footer-brand h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--ejqv-primary);
            margin-bottom: 16px;
        }

        .ejqv-footer-links h4 {
            margin-bottom: 20px;
            font-size: 1rem;
        }

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

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

        .ejqv-footer-links a {
            color: var(--ejqv-text-muted);
            text-decoration: none;
            transition: var(--ejqv-transition);
        }

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

        .ejqv-copyright {
            padding-top: 32px;
            border-top: 1px solid #F0F0F0;
            text-align: center;
            color: var(--ejqv-text-muted);
            font-size: 0.9rem;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .ejqv-nav-wrapper {
                padding: 10px 20px;
                border-radius: 20px;
                top: 10px;
            }
            .ejqv-nav-links {
                display: none; /* 移动端建议采用汉堡菜单，此处为简化展示 */
            }
            .ejqv-hero {
                padding-top: 120px;
            }
            .ejqv-ai-showcase {
                padding: 40px 24px;
            }
            .ejqv-card {
                padding: 32px;
                min-height: auto;
            }
        }