<style>
        /* 复用首页核心样式，此处精简引入，实际可与首页合并 */
        *{margin:0;padding:0;box-sizing:border-box;} body{font-family:system-ui,sans-serif;font-size:18px;color:#1e293b;background:#fff;line-height:1.6;} .container{max-width:1280px;margin:0 auto;padding:0 24px;} header{border-bottom:1px solid #eef2f6;position:sticky;top:0;background:#fff;z-index:50;} .header-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0;gap:16px;} .logo-area{display:flex;align-items:center;gap:12px;}.logo-icon{font-size:32px;}.logo-text{font-size:28px;font-weight:700;}.logo-text span{background:linear-gradient(135deg,#1e6fff,#003d99);-webkit-background-clip:text;background-clip:text;color:transparent;} nav{display:flex;gap:32px;} nav a{text-decoration:none;color:#1e293b;font-size:20px;} .btn-download-header{background:#1e6fff;color:#fff;border:none;padding:12px 28px;border-radius:40px;font-weight:600;font-size:20px;text-decoration:none;}
        .btn{display:inline-block;background:#1e6fff;color:#fff;padding:14px 36px;border-radius:40px;font-weight:600;text-decoration:none;font-size:20px;box-shadow:0 1px 3px rgba(0,0,0,0.1);} .btn-outline{background:transparent;border:2px solid #1e6fff;color:#1e6fff;} .section-title{font-size:40px;font-weight:700;text-align:center;margin:48px 0 32px;}.platform-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:30px;margin:40px 0;}.platform-card{background:#f8fafc;padding:32px;border-radius:16px;box-shadow:0 1px 3px rgba(0,0,0,0.1);}.platform-icon{font-size:48px;}.steps-row{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;}.faq-block details{background:#f8fafc;padding:20px;border-radius:16px;margin-bottom:12px;} footer{background:#1e293b;color:#cbd5e1;padding:48px 0 24px;margin-top:60px;}.footer-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:40px;}.footer-col a{color:#cbd5e1;text-decoration:none;} .copyright{text-align:center;padding-top:40px;} @media(max-width:768px){.platform-grid,.steps-row,.footer-grid{grid-template-columns:1fr;}}
        .text-center{text-align:center;}.mt-4{margin-top:24px;}
    </style>