.login-container{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#667eea,#764ba2);padding:20px}.login-box{background:#fff;border-radius:16px;box-shadow:0 20px 60px #0000004d;padding:40px;width:100%;max-width:450px}.login-box h1{font-size:28px;font-weight:700;color:#1a202c;margin-bottom:8px;text-align:center}.login-box .subtitle{color:#718096;text-align:center;margin-bottom:32px;font-size:14px}.form-group{margin-bottom:20px}.form-group label{display:block;font-size:14px;font-weight:500;color:#2d3748;margin-bottom:8px}.form-group input{width:100%;padding:12px 16px;border:1px solid #e2e8f0;border-radius:8px;font-size:14px;transition:all .2s;box-sizing:border-box}.form-group input:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.form-group input:disabled{background-color:#f7fafc;cursor:not-allowed}.phone-input-group{display:flex;gap:8px}.phone-input-group input{flex:1}.sms-code-btn{padding:12px 20px;background-color:#e2e8f0;color:#a0aec0;border:none;border-radius:8px;font-size:14px;cursor:not-allowed;white-space:nowrap}.hint{display:block;margin-top:6px;font-size:12px;color:#a0aec0}.error-message{background-color:#fff5f5;color:#c53030;padding:12px 16px;border-radius:8px;margin-bottom:20px;font-size:14px;border:1px solid #feb2b2}.login-button{width:100%;padding:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:all .2s}.login-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 10px 20px #667eea4d}.login-button:active:not(:disabled){transform:translateY(0)}.login-button:disabled{opacity:.6;cursor:not-allowed}.divider{margin:24px 0;text-align:center;position:relative}.divider:before{content:"";position:absolute;left:0;top:50%;width:100%;height:1px;background-color:#e2e8f0}.divider span{position:relative;background:#fff;padding:0 16px;color:#a0aec0;font-size:14px}.wechat-login-btn{width:100%;padding:14px;background-color:#f7fafc;color:#a0aec0;border:1px solid #e2e8f0;border-radius:8px;font-size:14px;cursor:not-allowed;display:flex;align-items:center;justify-content:center;gap:8px}.wechat-icon{font-size:20px}.register-link{margin-top:24px;text-align:center;font-size:14px;color:#718096}.link-button{background:none;border:none;color:#667eea;font-weight:600;cursor:pointer;padding:0;margin-left:4px;text-decoration:none}.link-button:hover{text-decoration:underline}.demo-hint{margin-top:24px;padding:16px;background-color:#edf2f7;border-radius:8px;font-size:13px}.demo-hint p{margin:0 0 8px;font-weight:600;color:#2d3748}.demo-hint ul{margin:0;padding-left:20px;color:#4a5568}.demo-hint li{margin-bottom:4px}