.banner{background-image:url(/images/help/banner_pc.jpg);width:100%;height:300px;background-size:cover;background-position:center}.banner .banner-content{padding-top:170px;margin-bottom:10px}.banner h1{color:rgba(255,255,255,.9);text-align:center;font-size:40px}.tabs-container{max-width:1200px;margin:40px auto;padding:0 20px}.tabs-nav{display:flex;margin-bottom:30px;border-bottom:2px solid #e5e7eb;padding-bottom:10px;justify-content:space-between;align-items:center}.tab-btn{padding:12px 30px;font-size:22px;font-weight:500;color:#666;background:0 0;border:0;cursor:pointer;position:relative;transition:all .3s ease}.tab-btn:hover{color:#1890ff}.tab-btn.active{color:#1890ff;font-weight:600}.tab-btn.active::after{content:'';position:absolute;bottom:-12px;left:0;right:0;height:3px;background:#1890ff;border-radius:2px}.tabs-content{position:relative}.tab-pane{display:none;animation:fadeIn .3s ease}.tab-pane.active{display:block}.tab-content{display:flex;align-items:center;justify-content:space-around}.tab-content h3{font-size:24px;font-weight:600;color:#333;margin-bottom:15px}.tab-content p{font-size:16px;font-weight:400;color:#666;line-height:1.5;margin-bottom:30px}.tab-content img{width:500px;height:auto}.start{display:inline-block;padding:8px 15px;font-size:18px;font-weight:500;color:#1890ff;border:1px solid #1890ff;background:0 0;border-radius:30px}.solution{margin:60px 0}.solution h1{font-size:40px;font-weight:600;color:#333;margin-bottom:30px;text-align:center}.solution .tab-content{margin:0 auto}.solution .tab-content h2{font-size:30px;font-weight:600;color:#333;margin-bottom:30px}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}@media screen and (max-width:900px){.tabs-nav{flex-wrap:wrap}.tab-btn{padding:10px 20px;font-size:14px}.tab-content h3{font-size:14px}.tab-content p{font-size:12px}.tab-content img{width:300px;height:auto}.solution .tab-content h2{font-size:20px;font-weight:600;color:#333;margin-bottom:30px}}@media screen and (max-width:600px){.tabs-nav{gap:5px}.tab-btn{padding:8px 15px;font-size:13px;flex:1;min-width:80px}.tabs-container{margin:20px auto}.tab-content h3{font-size:14px}.tab-content p{font-size:12px}.tab-content img{width:200px;height:auto}.solution .tab-content h2{font-size:14px;font-weight:600;color:#333;margin-bottom:30px}}