.App{width:100%;min-height:100vh;background-color:var(--white)}.container{max-width:1200px;margin:0 auto;padding:0 20px}.section-title{font-size:24px;color:var(--text-dark);text-align:center;margin-bottom:20px;font-weight:700}.section-title:after{content:"";display:block;width:40px;height:3px;background-color:var(--primary-color);margin:10px auto 0}.btn{padding:12px 24px;border-radius:4px;font-size:16px;font-weight:500;transition:all .3s ease;display:inline-block;text-align:center}.btn-primary{background-color:var(--primary-color);color:var(--white)}.btn-primary:hover{background-color:#0d4ed8;transform:scale(1.05)}.btn-secondary{background-color:transparent;color:var(--white);border:2px solid var(--white)}.btn-secondary:hover{background-color:var(--white);color:var(--primary-color);transform:scale(1.05)}@media (max-width: 768px){.section-title{font-size:20px}.btn{padding:10px 20px;font-size:14px}}*{margin:0;padding:0;box-sizing:border-box}:root{--primary-color: #165DFF;--dark-gray: #2C3E50;--text-dark: #333333;--text-gray: #666666;--text-light: #999999;--bg-light: #F8F9FA;--success-color: #36D399;--error-color: #F87272;--white: #FFFFFF}body{font-family:Microsoft YaHei,微软雅黑,PingFang SC,Helvetica Neue,Arial,sans-serif;color:var(--text-dark);line-height:1.6;overflow-x:hidden}a{text-decoration:none;color:inherit}button{cursor:pointer;border:none;font-family:inherit}input,textarea,select{font-family:inherit}img{max-width:100%;height:auto;display:block}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:var(--bg-light)}::-webkit-scrollbar-thumb{background:var(--text-light);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-gray)}