<style>
        *{margin:0;padding:0;box-sizing:border-box}
        body{font-family:'Segoe UI',-apple-system,BlinkMacSystemFont,'Helvetica Neue',sans-serif;background:#f9fafb;color:#1e293b;line-height:1.7;letter-spacing:0.3px}

        .glass{background:rgba(255,255,255,0.75);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(255,255,255,0.6)}
        header{position:sticky;top:0;z-index:100;padding:0 24px;height:72px;display:flex;align-items:center;justify-content:space-between;transition:all 0.3s}
        .logo{font-size:1.8rem;font-weight:700;color:#0b2b5e;text-decoration:none;display:flex;align-items:center;gap:8px}
        .logo svg{width:36px;height:36px}
        nav{display:flex;align-items:center;gap:8px}
        nav a{margin-left:32px;text-decoration:none;color:#334155;font-weight:500;transition:color 0.2s;white-space:nowrap}
        nav a:hover,nav a.active{color:#3b82f6}
        .nav-download-btn{display:inline-block;padding:8px 20px;background:#3b82f6;color:#fff !important;border-radius:30px;font-weight:600;margin-left:32px;transition:all 0.3s;box-shadow:0 4px 12px rgba(59,130,246,0.3)}
        .nav-download-btn:hover{background:#2563eb;transform:translateY(-1px);box-shadow:0 6px 16px rgba(59,130,246,0.4);color:#fff !important}

        .btn-primary{display:inline-block;padding:12px 28px;background:#3b82f6;color:#fff;border-radius:40px;text-decoration:none;font-weight:600;transition:all 0.3s;box-shadow:0 6px 20px rgba(59,130,246,0.3);text-align:center}
        .btn-primary:hover{background:#2563eb;transform:translateY(-2px);box-shadow:0 10px 25px rgba(59,130,246,0.4)}
        .btn-outline{display:inline-block;padding:12px 28px;border:2px solid #3b82f6;color:#3b82f6;border-radius:40px;text-decoration:none;font-weight:600;transition:all 0.3s;text-align:center}
        .btn-outline:hover{background:#3b82f6;color:#fff}

        .container{max-width:1200px;margin:0 auto;padding:0 24px}
        section{padding:100px 0}

        .hero{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;padding:100px 0;gap:40px}
        .hero-text{flex:1 1 500px;max-width:600px}
        .hero-text h1{font-size:3rem;font-weight:700;color:#0b2b5e;margin-bottom:20px;line-height:1.2}
        .hero-text p{font-size:1.2rem;color:#475569;margin-bottom:32px}
        .hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
        .hero-image{flex:1 1 300px;text-align:center}
        .hero-image img{max-width:100%;height:auto;border-radius:24px}

        .section-title{text-align:center;font-size:2.2rem;font-weight:700;color:#0b2b5e;margin-bottom:16px}
        .section-subtitle{text-align:center;color:#64748b;max-width:600px;margin:0 auto 48px;font-size:1.1rem}
        .highlight{color:#3b82f6}

        .features{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px}
        .feature-card{background:#fff;border-radius:16px;padding:32px;box-shadow:0 4px 20px rgba(0,0,0,0.04);transition:all 0.3s;border:1px solid #f1f5f9}
        .feature-card:hover{transform:translateY(-5px);box-shadow:0 12px 30px rgba(0,0,0,0.08)}
        .feature-card svg{width:48px;height:48px;margin-bottom:20px;color:#3b82f6}
        .feature-card h3{font-size:1.4rem;margin-bottom:12px;color:#0f172a}
        .feature-card p{color:#64748b}

        .stats{display:flex;justify-content:space-around;flex-wrap:wrap;gap:32px;text-align:center;padding:60px 0;background:#fff;border-radius:24px;margin:80px 0}
        .stat-item h4{font-size:2.5rem;font-weight:700;color:#0b2b5e;margin-bottom:8px}
        .stat-item p{color:#64748b}

        .testimonials{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:32px}
        .testimonial{background:#fff;border-radius:16px;padding:24px;box-shadow:0 4px 15px rgba(0,0,0,0.04)}
        .testimonial p{font-style:italic;color:#334155;margin-bottom:12px}
        .testimonial .author{font-weight:600;color:#0b2b5e}

        /* 版本选择卡片 */
        .plan-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:32px;margin-top:40px}
        .plan-card{background:#fff;border-radius:24px;padding:40px 32px;box-shadow:0 8px 30px rgba(0,0,0,0.04);transition:all 0.3s;text-align:center;border:1px solid #e2e8f0}
        .plan-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px rgba(0,0,0,0.08)}
        .plan-card h3{font-size:1.8rem;color:#0b2b5e;margin-bottom:12px}
        .plan-card .price{font-size:2rem;font-weight:700;color:#3b82f6;margin:16px 0}
        .plan-card ul{list-style:none;text-align:left;color:#475569;margin:24px 0;line-height:2.2}
        .plan-card ul li::before{content:'✓';color:#3b82f6;margin-right:8px;font-weight:bold}
        .plan-card .btn-plan{display:inline-block;padding:12px 28px;background:#3b82f6;color:#fff;border-radius:40px;text-decoration:none;font-weight:600;transition:0.3s;margin-top:12px}
        .plan-card .btn-plan:hover{background:#2563eb;transform:scale(1.02)}
        .plan-card.recommended{border:2px solid #3b82f6;position:relative}
        .plan-card.recommended::before{content:'最受欢迎';position:absolute;top:-16px;left:50%;transform:translateX(-50%);background:#3b82f6;color:#fff;padding:4px 20px;border-radius:20px;font-size:0.85rem;font-weight:600}

        /* 下载板块 */
        .download-section{background:rgba(255,255,255,0.5);backdrop-filter:blur(8px);border-radius:40px;padding:50px 30px;margin:0 auto;box-shadow:0 20px 40px rgba(0,0,0,0.03);border:1px solid rgba(255,255,255,0.6)}
        .download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:24px;margin-top:32px}
        .dl-card{background:rgba(255,255,255,0.7);backdrop-filter:blur(12px);border-radius:24px;padding:32px 16px 24px;text-align:center;transition:all 0.3s;border:1px solid rgba(255,255,255,0.8);box-shadow:0 8px 24px rgba(0,0,0,0.04);display:flex;flex-direction:column;align-items:center;gap:12px;text-decoration:none;color:inherit}
        .dl-card:hover{transform:translateY(-8px);box-shadow:0 20px 40px rgba(0,0,0,0.12);background:#fff;border-color:#e2e8f0}
        .dl-icon{width:64px;height:64px;border-radius:20px;display:flex;align-items:center;justify-content:center;font-size:2rem;background:rgba(59,130,246,0.1);color:#3b82f6;margin-bottom:8px}
        .dl-card:nth-child(2) .dl-icon{background:rgba(100,116,139,0.1);color:#64748b}
        .dl-card:nth-child(3) .dl-icon{background:rgba(16,185,129,0.1);color:#10b981}
        .dl-card:nth-child(4) .dl-icon{background:rgba(139,92,246,0.1);color:#8b5cf6}
        .dl-card:nth-child(5) .dl-icon{background:rgba(245,158,11,0.1);color:#f59e0b}
        .dl-card strong{font-size:1.3rem;color:#0b2b5e}
        .dl-card .dl-desc{font-size:0.9rem;color:#64748b;margin-top:4px}
        .dl-card .dl-btn{display:inline-block;padding:8px 20px;background:#3b82f6;color:#fff;border-radius:30px;font-weight:600;font-size:0.9rem;transition:background 0.2s}
        .dl-card:hover .dl-btn{background:#2563eb}

        /* FAQ 精选 */
        .faq-list details{background:#fff;border-radius:12px;margin-bottom:12px;padding:20px 24px;box-shadow:0 2px 10px rgba(0,0,0,0.04);transition:0.2s}
        .faq-list details[open]{box-shadow:0 4px 20px rgba(0,0,0,0.08)}
        .faq-list summary{font-weight:600;font-size:1.1rem;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;color:#0b2b5e}
        .faq-list summary::-webkit-details-marker{display:none}
        .faq-list summary::after{content:'+';font-size:1.5rem;color:#3b82f6;transition:0.2s;margin-left:12px}
        .faq-list details[open] summary::after{content:'−'}
        .faq-list .answer{padding-top:12px;color:#475569;line-height:1.8}

        /* 图文区域间距优化 */
        .feature-row{padding:40px 0}
        .feature-row .content-col{padding:20px}

        footer{background:#0b2b5e;color:#e2e8f0;padding:60px 0 24px;margin-top:80px}
        footer .footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:40px}
        footer h4{color:#fff;margin-bottom:16px}
        footer a{color:#cbd5e1;text-decoration:none;display:block;margin:8px 0;transition:color 0.2s}
        footer a:hover{color:#fff}
        .copyright{text-align:center;margin-top:32px;padding-top:24px;border-top:1px solid #334155;color:#94a3b8}

        /* 响应式 */
        @media(max-width:768px){
            header{flex-direction:column;height:auto;padding:12px 20px;gap:12px}
            nav{justify-content:center;flex-wrap:wrap}
            nav a{margin-left:12px;font-size:0.95rem}
            .nav-download-btn{margin-left:12px}
            .hero{flex-direction:column;text-align:center;padding:60px 0 40px}
            .hero-text{max-width:100%;display:flex;flex-direction:column;align-items:center}
            .hero-text h1{font-size:2.2rem}
            .hero-buttons{justify-content:center}
            .hero-image img{max-width:280px}
            .download-section{padding:30px 16px;border-radius:30px}
            .section-title{font-size:1.8rem}
            .plan-card{padding:32px 20px}
            .feature-row{padding:20px 0}
            /* 底部移动端单列显示 */
            footer .footer-grid{grid-template-columns:1fr;text-align:center;gap:32px}
            footer .footer-grid div{text-align:center}
        }
        @media(max-width:480px){
            .hero-text h1{font-size:1.8rem}
            .hero-text p{font-size:1rem}
            .btn-primary,.btn-outline{width:100%;text-align:center}
            .download-grid{grid-template-columns:1fr 1fr}
            footer{padding:40px 12px 20px}
        }
    </style>