/* 公共登录/注册页样式 */
*{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}
.auth-wrap{width:100%;max-width:400px;position:relative}
.auth-back{position:absolute;top:-46px;left:0;color:#fff;font-size:13px;text-decoration:none;opacity:.85}
.auth-back:hover{opacity:1}
.auth-card{background:#fff;border-radius:16px;box-shadow:0 20px 60px rgba(0,0,0,.25);padding:36px 32px}
.auth-brand{text-align:center;margin-bottom:24px}
.auth-mark{width:56px;height:56px;border-radius:14px;background:linear-gradient(135deg,#4f6ef7,#7b5cf0);color:#fff;font-size:26px;display:flex;align-items:center;justify-content:center;margin:0 auto 14px}
.auth-brand h1{font-size:20px;color:#1f2333}
.auth-brand p{font-size:13px;color:#8a93a3;margin-top:6px}
.auth-error{background:#fff1f0;border:1px solid #ffccc7;color:#cf1322;border-radius:8px;padding:9px 12px;font-size:13px;margin-bottom:14px}
.auth-field{margin-bottom:14px}
.auth-field input{width:100%;border:1px solid #e3e7ee;border-radius:10px;padding:12px 14px;font-size:14px;outline:none;transition:.15s}
.auth-field input:focus{border-color:#4f6ef7;box-shadow:0 0 0 3px rgba(79,110,247,.12)}
.auth-btn{width:100%;border:none;border-radius:10px;background:linear-gradient(135deg,#4f6ef7,#7b5cf0);color:#fff;font-size:15px;padding:13px;cursor:pointer;margin-top:4px}
.auth-btn:hover{opacity:.92}
.auth-foot{text-align:center;font-size:13px;color:#8a93a3;margin-top:18px}
.auth-foot a{color:#4f6ef7;text-decoration:none;font-weight:600}