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.card-icon-wrapper{transform:scale(1.1) rotate(5deg);background:linear-gradient(135deg,#e6f0ff,#d5e4ff)}.card-icon{font-size:40px;line-height:1}.select-card h2{font-size:22px;font-weight:700;color:#111827;margin-bottom:8px}.select-card p{font-size:14px;color:#6b7280;margin-bottom:20px}.card-features{display:flex;justify-content:center;gap:8px;margin-bottom:24px;flex-wrap:wrap}.feature-tag{background:#f3f4f6;color:#4b5563;font-size:11px;padding:4px 10px;border-radius:6px;font-weight:500;transition:all .2s}.select-card:hover .feature-tag{background:#e6f0ff;color:#3b6dd6}.card-btn{background:linear-gradient(135deg,#5b8def,#3b6dd6);background-size:200% 200%;animation:gradientShift 3s ease infinite;color:#fff;border:none;padding:12px 28px;border-radius:12px;font-size:15px;font-weight:600;cursor:pointer;transition:all .25s;width:100%;position:relative;overflow:hidden}.card-btn-blue{background:linear-gradient(135deg,#5b8def,#3b6dd6,#5b8def);background-size:200% 200%;animation:gradientShift 3s ease infinite}.card-btn-orange{background:linear-gradient(135deg,#f59e0b,#d97706,#f59e0b);background-size:200% 200%;animation:gradientShift 3s ease infinite}@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}to{background-position:0% 50%}}.card-btn:after{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .5s}.select-card:hover .card-btn:after{left:100%}.select-card:hover .card-btn-blue{background:linear-gradient(135deg,#3b6dd6,#2b5bbf,#3b6dd6);background-size:200% 200%;box-shadow:0 8px 20px #3b6dd659;transform:translateY(-2px)}.select-card:hover .card-btn-orange{background:linear-gradient(135deg,#d97706,#b45309,#d97706);background-size:200% 200%;box-shadow:0 8px 20px #d9770659;transform:translateY(-2px)}.select-tips{display:flex;justify-content:center;gap:32px;flex-wrap:wrap;animation:fadeInUp .6s ease-out .2s both}.tip-item{display:flex;align-items:center;gap:8px;font-size:13px;color:#6b7280;background:#fff;padding:10px 16px;border-radius:10px;box-shadow:0 2px 8px #1018280a;border:1px solid rgba(16,24,40,.04)}.tip-icon{font-size:16px}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.back-header{display:flex;align-items:center;gap:14px;margin-bottom:20px}.btn-back{background:#fff;border:1px solid #d1d5db;padding:8px 14px;border-radius:8px;font-size:14px;cursor:pointer;transition:all .2s;color:#374151}.btn-back:hover{border-color:#5b8def;color:#2f5bd6}.current-form{font-size:18px;font-weight:600;color:#111827}.wechat-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:#0009;z-index:9999;display:flex;align-items:center;justify-content:center;padding:20px;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.wechat-modal-content{background:#fff;border-radius:16px;padding:28px;max-width:420px;width:100%;text-align:center;box-shadow:0 20px 60px #0003;animation:fadeInUp .3s ease-out}.wechat-modal-content h3{font-size:18px;color:#111827;margin-bottom:10px}.wechat-modal-content p{font-size:14px;color:#4b5563;margin-bottom:16px;line-height:1.6}.wechat-url-box{display:flex;gap:8px;margin-bottom:12px}.wechat-url-input{flex:1;padding:10px;border:1px solid #d9d9d9;border-radius:8px;font-size:12px;background:#f9fafb}.wechat-copy-btn{background:linear-gradient(135deg,#5b8def,#3b6dd6);color:#fff;border:none;padding:10px 16px;border-radius:8px;cursor:pointer;font-size:13px;white-space:nowrap;transition:all .2s}.wechat-copy-btn:hover{background:linear-gradient(135deg,#3b6dd6,#2b5bbf);transform:translateY(-1px)}.wechat-tip{font-size:12px;color:#9ca3af;margin-bottom:16px}.wechat-close-btn{background:#f3f4f6;color:#374151;border:1px solid #d1d5db;padding:10px 24px;border-radius:8px;cursor:pointer;font-size:14px;transition:all .2s}.wechat-close-btn:hover{background:#e5e7eb}.server-status{background:#fff;border-radius:12px;padding:22px;margin-bottom:20px;text-align:center;border:1px solid rgba(16,24,40,.06);box-shadow:0 8px 20px #1018280d}.server-status.error{border-left:4px solid #f59e0b}.server-status .spinner{width:30px;height:30px;border:3px solid #f0f0f0;border-top-color:#4a90d9;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 12px}@keyframes spin{to{transform:rotate(360deg)}}.footer{text-align:center;padding:26px;margin-top:48px;color:#9ca3af;font-size:13px;border-top:1px solid rgba(255,255,255,.2);position:relative;z-index:1}.footer-features{display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin-bottom:14px}.footer-tag{background:#fffc;color:#3b6dd6;font-size:11px;padding:4px 10px;border-radius:999px;border:1px solid rgba(59,109,214,.2);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.footer-copyright{margin:0;color:#9ca3af;font-size:13px;letter-spacing:.5px;display:flex;align-items:center;justify-content:center;gap:8px;flex-wrap:wrap;padding-top:16px;border-top:1px solid rgba(255,255,255,.15)}.copyright-symbol{font-size:16px;font-weight:700;background:linear-gradient(135deg,#5b8def,#3b6dd6);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.copyright-year{font-weight:600;color:#6b7280}.copyright-divider{color:#d1d5db;font-size:10px}.copyright-org{color:#4b5563;font-weight:500}.copyright-note{color:#9ca3af;font-style:italic}@media (max-width: 640px){.app{padding:20px 10px}.select-header h1{font-size:24px}.select-cards{flex-direction:column;align-items:center}.select-card{width:100%;max-width:360px}.select-tips{flex-direction:column;align-items:center}.tip-item{width:100%;max-width:360px;justify-content:center}.bg-circle-1{width:300px;height:300px}.bg-circle-2{width:200px;height:200px}.bg-circle-3{width:150px;height:150px}}