:root {
            --h5hz5o-google-blue: #4285F4;
            --h5hz5o-google-red: #EA4335;
            --h5hz5o-google-yellow: #FBBC05;
            --h5hz5o-google-green: #34A853;
            --h5hz5o-text-dark: #202124;
            --h5hz5o-text-light: #5f6368;
            --h5hz5o-bg-light: #f8f9fa;
            --h5hz5o-white: #ffffff;
            --h5hz5o-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --h5hz5o-max-width: 1320px;
        }

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

        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif, 'Apple Color Emoji', 'Segoe UI Emoji';
            background-color: var(--h5hz5o-bg-light);
            color: var(--h5hz5o-text-dark);
            line-height: 1.6;
            overflow-x: hidden;
            word-break: keep-all;
        }

        /* 导航栏 */
        .h5hz5o-navbar {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            padding: 0 24px;
        }

        .h5hz5o-nav-container {
            max-width: var(--h5hz5o-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            height: 72px;
        }

        .h5hz5o-logo {
            flex: 0 0 auto;
            min-width: 0;
            display: flex;
            align-items: center;
        }

        .h5hz5o-logo img {
            height: 32px;
            width: auto;
        }

        .h5hz5o-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            margin-left: auto;
        }

        .h5hz5o-nav-item a {
            text-decoration: none;
            color: var(--h5hz5o-text-light);
            font-size: 14px;
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 20px;
            transition: var(--h5hz5o-transition);
        }

        .h5hz5o-nav-item a:hover {
            background: rgba(66, 133, 244, 0.08);
            color: var(--h5hz5o-google-blue);
        }

        .h5hz5o-nav-item.h5hz5o-active a {
            background: var(--h5hz5o-google-blue);
            color: var(--h5hz5o-white);
        }

        /* Hero 区块 - 独特非对称布局 */
        .h5hz5o-hero {
            padding: 160px 24px 96px;
            background: radial-gradient(circle at 90% 10%, rgba(66, 133, 244, 0.05) 0%, transparent 40%),
                        radial-gradient(circle at 10% 90%, rgba(52, 168, 83, 0.05) 0%, transparent 40%);
            overflow: hidden;
        }

        .h5hz5o-hero-grid {
            max-width: var(--h5hz5o-max-width);
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 48px;
            align-items: center;
        }

        .h5hz5o-hero-content {
            min-width: 0;
            word-break: break-word;
        }

        .h5hz5o-hero-badge {
            display: inline-block;
            background: linear-gradient(90deg, var(--h5hz5o-google-blue), var(--h5hz5o-google-green));
            color: white;
            padding: 4px 16px;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 24px;
        }

        .h5hz5o-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            background: linear-gradient(135deg, #202124 0%, #5f6368 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }

        .h5hz5o-hero-subtitle {
            font-size: clamp(1.1rem, 2vw + 0.5rem, 1.4rem);
            color: var(--h5hz5o-text-light);
            margin-bottom: 40px;
            max-width: 600px;
        }

        .h5hz5o-hero-visual {
            position: relative;
            min-width: 0;
            height: 400px;
            background: #fff;
            border-radius: 40px;
            box-shadow: 0 40px 80px rgba(0,0,0,0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            transform: perspective(1000px) rotateY(-5deg);
        }

        /* 核心动力模块 - Grid 布局 */
        .h5hz5o-tech-section {
            padding: 96px 24px;
            max-width: var(--h5hz5o-max-width);
            margin: 0 auto;
        }

        .h5hz5o-section-header {
            text-align: center;
            margin-bottom: 64px;
        }

        .h5hz5o-section-title {
            font-size: clamp(2rem, 3vw, 2.5rem);
            margin-bottom: 16px;
        }

        .h5hz5o-tech-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
            gap: 32px;
        }

        .h5hz5o-tech-card {
            background: var(--h5hz5o-white);
            padding: 48px;
            border-radius: 24px;
            border: 1px solid rgba(0,0,0,0.05);
            transition: var(--h5hz5o-transition);
            display: flex;
            flex-direction: column;
            min-width: 0;
        }

        .h5hz5o-tech-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.05);
            border-color: var(--h5hz5o-google-blue);
        }

        .h5hz5o-card-icon-box {
            width: 64px;
            height: 64px;
            border-radius: 16px;
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 32px;
        }

        .h5hz5o-icon-v8 { background: rgba(66, 133, 244, 0.1); color: var(--h5hz5o-google-blue); }
        .h5hz5o-icon-proc { background: rgba(52, 168, 83, 0.1); color: var(--h5hz5o-google-green); }
        .h5hz5o-icon-sec { background: rgba(234, 67, 53, 0.1); color: var(--h5hz5o-google-red); }

        .h5hz5o-tech-name {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .h5hz5o-tech-desc {
            color: var(--h5hz5o-text-light);
            margin-bottom: 24px;
            flex-grow: 1;
        }

        .h5hz5o-tech-metric {
            padding-top: 24px;
            border-top: 1px solid #eee;
            font-weight: 600;
            color: var(--h5hz5o-google-blue);
        }

        /* 安全防护区 - 横向流动布局 */
        .h5hz5o-shield-section {
            background: #202124;
            color: white;
            padding: 96px 24px;
        }

        .h5hz5o-shield-container {
            max-width: var(--h5hz5o-max-width);
            margin: 0 auto;
        }

        .h5hz5o-shield-flex {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 48px;
        }

        .h5hz5o-shield-item {
            flex: 1;
            min-width: 300px;
            background: rgba(255, 255, 255, 0.05);
            padding: 32px;
            border-radius: 16px;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .h5hz5o-shield-type {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--h5hz5o-google-yellow);
        }

        .h5hz5o-shield-freq {
            display: inline-block;
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: rgba(255, 255, 255, 0.1);
            padding: 2px 8px;
            border-radius: 4px;
            margin-top: 16px;
        }

        /* 问答区 */
        .h5hz5o-faq-section {
            padding: 96px 24px;
            max-width: 900px;
            margin: 0 auto;
        }

        .h5hz5o-faq-item {
            background: var(--h5hz5o-white);
            margin-bottom: 16px;
            border-radius: 12px;
            padding: 24px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.02);
        }

        .h5hz5o-faq-q {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
        }

        .h5hz5o-faq-q::before {
            content: "Q";
            background: var(--h5hz5o-google-blue);
            color: white;
            width: 24px;
            height: 24px;
            border-radius: 6px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            font-size: 12px;
        }

        /* 页脚 */
        .h5hz5o-footer {
            background: #f1f3f4;
            padding: 64px 24px;
            border-top: 1px solid #dadce0;
        }

        .h5hz5o-footer-content {
            max-width: var(--h5hz5o-max-width);
            margin: 0 auto;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 48px;
        }

        .h5hz5o-footer-brand h2 {
            font-size: 20px;
            margin-bottom: 16px;
            color: var(--h5hz5o-text-dark);
        }

        .h5hz5o-footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .h5hz5o-footer-group h4 {
            font-size: 14px;
            margin-bottom: 16px;
            text-transform: uppercase;
            color: var(--h5hz5o-text-light);
        }

        .h5hz5o-footer-group ul {
            list-style: none;
        }

        .h5hz5o-footer-group li {
            margin-bottom: 8px;
        }

        .h5hz5o-footer-group a {
            text-decoration: none;
            color: var(--h5hz5o-text-light);
            font-size: 14px;
            transition: var(--h5hz5o-transition);
        }

        .h5hz5o-footer-group a:hover {
            color: var(--h5hz5o-google-blue);
        }

        .h5hz5o-copyright {
            max-width: var(--h5hz5o-max-width);
            margin: 48px auto 0;
            padding-top: 24px;
            border-top: 1px solid #dadce0;
            font-size: 12px;
            color: var(--h5hz5o-text-light);
            text-align: center;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            .h5hz5o-nav-menu {
                display: none; /* 简化移动端显示 */
            }
            .h5hz5o-hero {
                padding-top: 120px;
            }
            .h5hz5o-hero-visual {
                height: 240px;
                transform: none;
            }
            .h5hz5o-tech-grid {
                grid-template-columns: 1fr;
            }
        }

        /* 动画效果 */
        .h5hz5o-speed-wave {
            width: 80%;
            height: 10px;
            background: linear-gradient(90deg, transparent, var(--h5hz5o-google-blue), transparent);
            position: absolute;
            animation: h5hz5o-scan 3s infinite linear;
        }

        @keyframes h5hz5o-scan {
            0% { transform: translateY(-100px); opacity: 0; }
            50% { opacity: 1; }
            100% { transform: translateY(100px); opacity: 0; }
        }