/* Common CSS - 通用样式文件 (压缩版) */
*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;font-size:14px;line-height:1.6;color:#333;background-color:#fff}a{color:#007bff;text-decoration:none;transition:color .3s ease}a:hover{color:#0056b3;text-decoration:underline}.btn{display:inline-block;padding:8px 16px;margin:4px 2px;border:none;border-radius:4px;cursor:pointer;font-size:14px;text-align:center;text-decoration:none;transition:all .3s ease}.btn-primary{background-color:#007bff;color:white}.btn-primary:hover{background-color:#0056b3}.container{max-width:1200px;margin:0 auto;padding:0 15px}.text-center{text-align:center}.hidden{display:none!important}.clearfix::after{content:"";display:table;clear:both}@media (max-width:768px){body{font-size:12px}.container{padding:0 10px}}.download-container{padding:40px 0;background:#f8f9fa}.download-header{text-align:center;margin-bottom:40px}.download-header h1{font-size:2.5rem;color:#333;margin-bottom:16px}.download-header p{font-size:1.1rem;color:#666;max-width:600px;margin:0 auto}.download-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:30px;margin-bottom:60px}.download-card{background:white;border-radius:12px;padding:30px;box-shadow:0 4px 6px rgba(0,0,0,.1);transition:transform .3s ease,box-shadow .3s ease;text-align:center}.download-card:hover{transform:translateY(-5px);box-shadow:0 8px 25px rgba(0,0,0,.15)}.download-icon{width:64px;height:64px;margin-bottom:20px}.download-card h3{font-size:1.4rem;color:#333;margin-bottom:12px}.download-card p{color:#666;margin-bottom:20px;line-height:1.6}.download-info{display:flex;justify-content:space-between;margin-bottom:20px;font-size:0.9rem;color:#888}.download-btn{display:inline-block;background:#007bff;color:white;padding:12px 24px;border-radius:6px;text-decoration:none;font-weight:500;transition:background .3s ease}.download-btn:hover{background:#0056b3;color:white}.docs-section{background:white;padding:40px;border-radius:12px;box-shadow:0 2px 4px rgba(0,0,0,.1)}.docs-section h2{text-align:center;font-size:2rem;color:#333;margin-bottom:16px}.docs-section>p{text-align:center;color:#666;margin-bottom:40px}.docs-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:20px}.doc-item{padding:20px;border:1px solid #e9ecef;border-radius:8px;text-align:center}.doc-item h4{color:#333;margin-bottom:12px}.doc-item a{color:#007bff;font-weight:500}.doc-item a:hover{color:#0056b3}