/* 基础变量与重置 */
        :root {
            --h5hz5o-chrome-blue: #4285F4;
            --h5hz5o-chrome-red: #EA4335;
            --h5hz5o-chrome-yellow: #FBBC05;
            --h5hz5o-chrome-green: #34A853;
            --h5hz5o-text-main: #202124;
            --h5hz5o-text-sub: #5f6368;
            --h5hz5o-bg-light: #f8f9fa;
            --h5hz5o-white: #ffffff;
            --h5hz5o-radius: 16px;
            --h5hz5o-shadow: 0 4px 20px rgba(0,0,0,0.08);
            --h5hz5o-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
            color: var(--h5hz5o-text-main);
            line-height: 1.6;
            background-color: var(--h5hz5o-white);
            overflow-x: hidden;
            word-break: break-word;
        }

        /* 导航栏设计 */
        .h5hz5o-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);
            padding: 0 24px;
        }

        .h5hz5o-nav-container {
            max-width: 1400px;
            margin: 0 auto;
            height: 72px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
        }

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

        .h5hz5o-logo img {
            height: 36px;
            width: auto;
        }

        .h5hz5o-nav-menu {
            display: flex;
            flex-wrap: wrap;
            list-style: none;
            gap: 8px;
            min-width: 0;
        }

        .h5hz5o-nav-item a {
            text-decoration: none;
            color: var(--h5hz5o-text-sub);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.95rem;
            font-weight: 500;
            transition: var(--h5hz5o-transition);
        }

        .h5hz5o-nav-item a:hover {
            background-color: rgba(66, 133, 244, 0.05);
            color: var(--h5hz5o-chrome-blue);
        }

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

        /* Hero 区：全屏背景/对角线分割设计 */
        .h5hz5o-hero {
            padding-top: 140px;
            padding-bottom: 80px;
            background: linear-gradient(135deg, #f1f3f4 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }

        .h5hz5o-hero::after {
            content: "";
            position: absolute;
            bottom: -50px;
            right: -50px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(66,133,244,0.05) 0%, transparent 70%);
            border-radius: 50%;
        }

        .h5hz5o-container {
            max-width: 1100px;
            margin: 0 auto;
            padding: 0 32px;
        }

        .h5hz5o-hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            min-width: 0;
        }

        .h5hz5o-hero-text {
            flex: 1;
            min-width: 300px;
        }

        .h5hz5o-badge {
            display: inline-block;
            padding: 6px 12px;
            background: var(--h5hz5o-chrome-blue);
            color: white;
            border-radius: 4px;
            font-size: 14px;
            margin-bottom: 24px;
            font-weight: bold;
        }

        .h5hz5o-hero-title {
            font-size: clamp(2.5rem, 5vw + 1rem, 4rem);
            line-height: 1.1;
            font-weight: 800;
            margin-bottom: 24px;
            color: var(--h5hz5o-text-main);
            word-break: keep-all;
        }

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

        /* 快捷键控制台网格 */
        .h5hz5o-shortcut-section {
            padding: 96px 0;
            background: var(--h5hz5o-white);
        }

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

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

        .h5hz5o-shortcut-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 32px;
        }

        .h5hz5o-shortcut-card {
            background: var(--h5hz5o-bg-light);
            border-radius: var(--h5hz5o-radius);
            padding: 32px;
            transition: var(--h5hz5o-transition);
            border: 1px solid transparent;
        }

        .h5hz5o-shortcut-card:hover {
            transform: translateY(-8px);
            background: var(--h5hz5o-white);
            box-shadow: var(--h5hz5o-shadow);
            border-color: rgba(66, 133, 244, 0.2);
        }

        .h5hz5o-card-tag {
            font-size: 12px;
            text-transform: uppercase;
            letter-spacing: 1px;
            color: var(--h5hz5o-chrome-blue);
            font-weight: 700;
            margin-bottom: 16px;
            display: block;
        }

        .h5hz5o-shortcut-item {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            padding: 12px 0;
            border-bottom: 1px solid rgba(0,0,0,0.05);
            min-width: 0;
        }

        .h5hz5o-shortcut-label {
            font-weight: 500;
            color: var(--h5hz5o-text-main);
        }

        .h5hz5o-shortcut-keys {
            display: flex;
            gap: 4px;
        }

        .h5hz5o-key {
            background: #e8eaed;
            padding: 2px 8px;
            border-radius: 4px;
            font-family: monospace;
            font-size: 13px;
            border-bottom: 2px solid #bdc1c6;
            color: #3c4043;
        }

        /* 技术架构深度解析 */
        .h5hz5o-tech-section {
            padding: 96px 0;
            background: #202124;
            color: white;
            border-radius: 40px 40px 0 0;
        }

        .h5hz5o-tech-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 48px;
        }

        .h5hz5o-tech-item {
            flex: 1;
            min-width: 300px;
        }

        .h5hz5o-tech-item h3 {
            font-size: 1.5rem;
            margin-bottom: 16px;
            color: var(--h5hz5o-chrome-blue);
        }

        .h5hz5o-tech-desc {
            color: #bdc1c6;
            margin-bottom: 16px;
            font-size: 0.95rem;
        }

        .h5hz5o-tech-meta {
            font-size: 0.85rem;
            padding: 8px 16px;
            background: rgba(255,255,255,0.05);
            border-left: 3px solid var(--h5hz5o-chrome-green);
            display: inline-block;
        }

        /* 安全防护盾 */
        .h5hz5o-shield-section {
            padding: 96px 0;
            background: var(--h5hz5o-bg-light);
        }

        .h5hz5o-shield-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .h5hz5o-shield-card {
            background: white;
            padding: 40px;
            border-radius: 24px;
            text-align: center;
            box-shadow: 0 2px 10px rgba(0,0,0,0.03);
        }

        .h5hz5o-shield-icon {
            width: 64px;
            height: 64px;
            margin: 0 auto 24px;
            background: rgba(52, 168, 83, 0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--h5hz5o-chrome-green);
            font-size: 24px;
            font-weight: bold;
        }

        /* FAQ 区 */
        .h5hz5o-faq-section {
            padding: 96px 0;
            background: white;
        }

        .h5hz5o-faq-item {
            max-width: 800px;
            margin: 0 auto 32px;
            padding: 24px;
            border: 1px solid #dadce0;
            border-radius: 12px;
        }

        .h5hz5o-faq-q {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 12px;
            color: var(--h5hz5o-chrome-blue);
        }

        /* 底部设计 */
        .h5hz5o-footer {
            background: #f8f9fa;
            padding: 64px 24px;
            border-top: 1px solid #e8eaed;
        }

        .h5hz5o-footer-content {
            max-width: 1100px;
            margin: 0 auto;
            text-align: center;
        }

        .h5hz5o-footer-brand {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--h5hz5o-text-main);
        }

        .h5hz5o-footer-links {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 24px;
            margin-bottom: 32px;
            list-style: none;
        }

        .h5hz5o-footer-links a {
            color: var(--h5hz5o-text-sub);
            text-decoration: none;
            font-size: 0.9rem;
        }

        .h5hz5o-copyright {
            color: #70757a;
            font-size: 0.8rem;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .h5hz5o-nav-menu {
                display: none; /* 简化移动端显示 */
            }
            .h5hz5o-hero {
                padding-top: 100px;
                text-align: center;
            }
            .h5hz5o-hero-text {
                flex: none;
                width: 100%;
            }
            .h5hz5o-tech-grid {
                flex-direction: column;
            }
        }