.login-container{max-width:600px;margin:80px auto;padding:40px;background:#fff;border-radius:12px;-webkit-box-shadow:0 4px 12px rgba(0,0,0,.05);box-shadow:0 4px 12px rgba(0,0,0,.05);font-family:PingFang SC,Microsoft YaHei,sans-serif}.login-title{text-align:center;font-size:2.2em;font-weight:600;color:#2c3e50;margin-bottom:20px;padding-bottom:12px;border-bottom:3px solid #3498db}.login-subtitle{display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-align:start;-ms-flex-align:start;align-items:flex-start;gap:20px;margin-top:30px;line-height:1.8;color:#555}.theme-icon{width:48px;height:48px}.description{-webkit-box-flex:1;-ms-flex:1;flex:1}.description br{display:block;margin:8px 0}