:root {
            --umkciz-primary: #FF6600;
            --umkciz-primary-dark: #E65C00;
            --umkciz-secondary: #1A1A2E;
            --umkciz-accent: #4A90E2;
            --umkciz-text-dark: #2D3436;
            --umkciz-text-light: #636E72;
            --umkciz-bg-light: #F9F9FB;
            --umkciz-white: #FFFFFF;
            --umkciz-gradient: linear-gradient(135deg, #FF6600 0%, #FF8F44 100%);
            --umkciz-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --umkciz-transition: all 0.3s ease;
        }

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--umkciz-bg-light);
            color: var(--umkciz-text-dark);
            line-height: 1.6;
            overflow-x: hidden;
        }

        /* 导航栏 */
        .umkciz-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
        }

        .umkciz-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 32px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }

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

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

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

        .umkciz-nav-link {
            text-decoration: none;
            color: var(--umkciz-text-dark);
            font-weight: 500;
            font-size: 16px;
            transition: var(--umkciz-transition);
            padding: 8px 4px;
            position: relative;
            white-space: nowrap;
        }

        .umkciz-nav-link:hover, .umkciz-nav-link.active {
            color: var(--umkciz-primary);
        }

        .umkciz-nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: var(--umkciz-primary);
            border-radius: 2px;
        }

        /* Hero 区块 - 独特非对称布局 */
        .umkciz-hero {
            padding: 160px 32px 96px;
            background: radial-gradient(circle at top right, #FFF5EE 0%, #FFFFFF 100%);
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            align-items: center;
            min-height: 80vh;
        }

        .umkciz-hero-content {
            flex: 1 1 500px;
            max-width: 700px;
            min-width: 0;
            padding-right: 48px;
            word-break: keep-all;
        }

        .umkciz-hero-title {
            font-size: clamp(2rem, 4vw + 1rem, 4rem);
            font-weight: 800;
            line-height: 1.2;
            color: var(--umkciz-secondary);
            margin-bottom: 24px;
            white-space: normal;
        }

        .umkciz-hero-subtitle {
            font-size: clamp(1rem, 1.5vw + 0.5rem, 1.25rem);
            color: var(--umkciz-text-light);
            margin-bottom: 48px;
            max-width: 600px;
            word-break: break-word;
        }

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

        /* 模拟声波动画 */
        .umkciz-wave-container {
            width: 300px;
            height: 300px;
            background: var(--umkciz-gradient);
            border-radius: 50%;
            display: flex;
            justify-content: center;
            align-items: center;
            box-shadow: 0 20px 50px rgba(255, 102, 0, 0.3);
            position: relative;
        }

        .umkciz-wave-icon {
            width: 80px;
            height: 80px;
            fill: white;
            z-index: 2;
        }

        .umkciz-pulse {
            position: absolute;
            width: 100%;
            height: 100%;
            border: 2px solid var(--umkciz-primary);
            border-radius: 50%;
            animation: umkciz-pulse-anim 2s infinite;
            opacity: 0;
        }

        .umkciz-pulse:nth-child(2) { animation-delay: 0.5s; }
        .umkciz-pulse:nth-child(3) { animation-delay: 1s; }

        @keyframes umkciz-pulse-anim {
            0% { transform: scale(1); opacity: 0.5; }
            100% { transform: scale(1.8); opacity: 0; }
        }

        /* 下载按钮组 */
        .umkciz-btn-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            min-width: 0;
        }

        .umkciz-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 16px 32px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--umkciz-transition);
            cursor: pointer;
            border: none;
        }

        .umkciz-btn-primary {
            background: var(--umkciz-gradient);
            color: white;
            box-shadow: 0 4px 15px rgba(255, 102, 0, 0.3);
        }

        .umkciz-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 102, 0, 0.4);
        }

        /* 特性区块 - 网格布局 */
        .umkciz-features {
            padding: 96px 32px;
            background: var(--umkciz-white);
        }

        .umkciz-section-title {
            text-align: center;
            font-size: clamp(1.5rem, 3vw, 2.5rem);
            margin-bottom: 64px;
            color: var(--umkciz-secondary);
        }

        .umkciz-feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .umkciz-feature-card {
            background: var(--umkciz-bg-light);
            padding: 48px;
            border-radius: 24px;
            transition: var(--umkciz-transition);
            border: 1px solid rgba(0,0,0,0.03);
            min-width: 0;
            word-break: break-word;
        }

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

        .umkciz-feature-tag {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(255, 102, 0, 0.1);
            color: var(--umkciz-primary);
            border-radius: 4px;
            font-size: 14px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .umkciz-feature-card h3 {
            margin-bottom: 16px;
            font-size: 24px;
        }

        /* 语音输入场景展示 - 图文交叉 */
        .umkciz-scene-section {
            padding: 96px 32px;
            max-width: 1400px;
            margin: 0 auto;
        }

        .umkciz-scene-row {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            margin-bottom: 96px;
            gap: 64px;
        }

        .umkciz-scene-row:nth-child(even) {
            flex-direction: row-reverse;
        }

        .umkciz-scene-text {
            flex: 1 1 400px;
            min-width: 0;
            word-break: keep-all;
        }

        .umkciz-scene-image-placeholder {
            flex: 1 1 400px;
            min-width: 0;
            height: 400px;
            background: #EEE;
            border-radius: 32px;
            position: relative;
            overflow: hidden;
            background: linear-gradient(45deg, #f3f3f3, #e9e9e9);
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .umkciz-scene-image-placeholder::before {
            content: "Sogou Voice AI";
            font-weight: 900;
            font-size: 40px;
            color: rgba(0,0,0,0.05);
            transform: rotate(-15deg);
        }

        /* 动态内容区块 */
        .umkciz-news-section {
            padding: 80px 32px;
            background: var(--umkciz-secondary);
            color: white;
        }

        .umkciz-news-container {
            max-width: 1100px;
            margin: 0 auto;
        }

        /* 页脚 */
        .umkciz-footer {
            background: #121212;
            color: #888;
            padding: 64px 32px;
        }

        .umkciz-footer-grid {
            max-width: 1400px;
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            justify-content: space-between;
        }

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

        .umkciz-footer-brand h2 {
            color: white;
            margin-bottom: 24px;
        }

        .umkciz-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
            flex: 2 1 600px;
            min-width: 0;
        }

        .umkciz-footer-column {
            flex: 1 1 150px;
            min-width: 0;
        }

        .umkciz-footer-column h4 {
            color: white;
            margin-bottom: 24px;
        }

        .umkciz-footer-column a {
            display: block;
            color: #888;
            text-decoration: none;
            margin-bottom: 12px;
            transition: var(--umkciz-transition);
        }

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

        .umkciz-copyright {
            text-align: center;
            padding-top: 48px;
            margin-top: 48px;
            border-top: 1px solid #333;
            font-size: 14px;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .umkciz-nav-menu {
                display: none; /* 简化移动端，实际应有汉堡菜单 */
            }
            .umkciz-hero {
                padding-top: 120px;
                text-align: center;
            }
            .umkciz-hero-content {
                padding-right: 0;
            }
            .umkciz-btn-group {
                justify-content: center;
            }
            .umkciz-scene-row {
                margin-bottom: 48px;
                gap: 32px;
            }
        }