<style>
        /* 复用首页核心样式 */
        :root { --primary: #1a73e8; --primary-dark: #1557b0; --gray-50: #f8f9fa; --gray-100: #f1f3f4; --gray-600: #5f6368; --gray-900: #202124; --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1); }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Google Sans', 'Roboto', Arial, sans-serif; line-height: 1.5; color: var(--gray-900); }
        .container { max-width: 1280px; margin: 0 auto; padding: 0 20px; }
        .header { background: #fff; box-shadow: 0 1px 2px rgba(0,0,0,0.05); position: sticky; top: 0; z-index: 100; }
        .nav { display: flex; justify-content: space-between; align-items: center; padding: 12px 0; flex-wrap: wrap; }
        .logo { display: flex; align-items: center; text-decoration: none; font-weight: 500; font-size: 1.5rem; }
        .logo svg { width: 36px; height: 36px; margin-right: 8px; }
        .nav-links { display: flex; gap: 24px; align-items: center; }
        .nav-links a { text-decoration: none; color: var(--gray-900); font-weight: 500; }
        .nav-links a:hover { color: var(--primary); }
        .btn { display: inline-block; padding: 10px 20px; border-radius: 4px; font-weight: 500; text-decoration: none; }
        .btn-primary { background: var(--primary); color: white; }
        .btn-primary:hover { background: var(--primary-dark); }
        .btn-outline { border: 1px solid var(--gray-600); color: var(--gray-900); }
        .btn-outline:hover { background: var(--gray-100); }
        .section { padding: 60px 0; }
        .section-title { font-size: 2.2rem; text-align: center; margin-bottom: 40px; }
        .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }
        .card { background: #fff; padding: 24px; border-radius: 12px; box-shadow: var(--shadow-md); border: 1px solid var(--gray-100); text-align: center; }
        .footer { background: var(--gray-50); padding: 40px 0; border-top: 1px solid var(--gray-100); }
        .footer-content { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 30px; }
        .footer a { text-decoration: none; color: var(--gray-600); display: block; margin-bottom: 8px; }
        .faq-item { border-bottom: 1px solid var(--gray-100); }
        .faq-question { padding: 16px; font-weight: 500; cursor: pointer; }
        .faq-answer { padding: 0 16px 16px; color: var(--gray-600); display: none; }
        .faq-item.active .faq-answer { display: block; }
        .download-cta-small { background: var(--primary); color: white; padding: 30px; border-radius: 12px; text-align: center; margin: 40px 0; }
        .tag-cloud { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 15px; }
        .tag { background: var(--gray-100); padding: 6px 12px; border-radius: 20px; color: var(--gray-600); text-decoration: none; font-size: 0.9rem; }
    </style>