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li:before{content:"✓";position:absolute;left:0;color:var(--accent-color);font-weight:700;font-size:1.2rem}.troubleshooting{display:flex;flex-direction:column;gap:25px}.trouble-item{padding:25px;background:var(--dark-bg-secondary);border-radius:12px;border:1px solid var(--border-color)}.trouble-item h4{font-size:1.1rem;color:var(--text-primary);margin-bottom:15px}.trouble-item ul{margin:10px 0 0;padding-left:25px}.trouble-item li{margin-bottom:8px}@media (max-width: 768px){.info-hero{padding:60px 0 40px}.info-title{font-size:2rem}.info-subtitle{font-size:1rem}.info-content{padding:40px 0}.info-section{margin-bottom:40px}.section-heading{font-size:1.5rem;margin-bottom:20px}.content-box{padding:25px}.content-box h3{font-size:1.2rem}.contact-grid,.values-grid{grid-template-columns:1fr;gap:20px}.timeline{padding-left:30px}.timeline-item:before{left:-36px}}@media (max-width: 480px){.info-hero{padding:40px 0 30px}.info-title{font-size:1.5rem}.content-box{padding:20px}.guide-steps li{padding-left:45px}.guide-steps li:before{width:30px;height:30px;font-size:1rem}}:root{--primary-color: #64b5f6;--secondary-color: #4a90e2;--accent-color: #81c784;--dark-bg: #0a0e27;--dark-bg-secondary: #1a1f3a;--dark-bg-tertiary: #252b48;--text-primary: #ffffff;--text-secondary: #b0bec5;--text-muted: #78909c;--border-color: rgba(100, 181, 246, .2);--shadow-color: rgba(0, 0, 0, .3);--gradient-start: #1a1f3a;--gradient-end: #0a0e27}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;line-height:1.6;background:linear-gradient(135deg,var(--dark-bg) 0%,var(--dark-bg-secondary) 100%);color:var(--text-primary);overflow-x:hidden;min-height:100vh}.app{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1;width:100%}a{color:var(--primary-color);text-decoration:none;transition:color .3s ease}a:hover{color:var(--secondary-color)}img{max-width:100%;height:auto;display:block}button{cursor:pointer;border:none;outline:none;font-family:inherit;transition:all .3s ease}input,textarea{font-family:inherit;outline:none}::-webkit-scrollbar{width:10px;height:10px}::-webkit-scrollbar-track{background:var(--dark-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--primary-color);border-radius:5px}::-webkit-scrollbar-thumb:hover{background:var(--secondary-color)}.container{max-width:1400px;margin:0 auto;padding:0 20px}@media (max-width: 768px){.container{padding:0 15px}}.section{padding:60px 0}@media (max-width: 768px){.section{padding:40px 0}}.section-title{font-size:2rem;font-weight:700;margin-bottom:30px;background:linear-gradient(90deg,var(--primary-color),var(--accent-color));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}@media (max-width: 768px){.section-title{font-size:1.5rem;margin-bottom:20px}}.loading{display:flex;justify-content:center;align-items:center;min-height:300px}.spinner{width:50px;height:50px;border:3px solid rgba(255,255,255,.1);border-top-color:var(--primary-color);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.fade-in{animation:fadeIn .6s ease-in}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.btn{display:inline-block;padding:12px 30px;background:linear-gradient(135deg,var(--primary-color),var(--secondary-color));color:#fff;border-radius:25px;font-weight:600;text-align:center;transition:all .3s ease;box-shadow:0 4px 15px #64b5f64d}.btn:hover{transform:translateY(-2px);box-shadow:0 6px 20px #64b5f666;color:#fff}.card{background:var(--dark-bg-tertiary);border-radius:12px;overflow:hidden;transition:all .3s ease;border:1px solid var(--border-color)}.card:hover{transform:translateY(-5px);box-shadow:0 10px 30px var(--shadow-color);border-color:var(--primary-color)}.tag{display:inline-block;padding:4px 12px;background:#64b5f633;color:var(--primary-color);border-radius:15px;font-size:.85rem;margin-right:8px;margin-bottom:8px;border:1px solid rgba(100,181,246,.3)}@media (max-width: 768px){.btn{padding:10px 20px;font-size:.9rem}}