*{margin:0;padding:0;box-sizing:border-box;font-family:"Segoe UI","Microsoft YaHei",sans-serif}
body{
    background:#050d1e;
    min-height:100vh;
    position:relative;
    display:flex;
    align-items:center;
    justify-content:center;
    padding:20px;
    overflow:hidden;
}
#particles{
    position:absolute;
    width:100%;height:100%;
    top:0;left:0;z-index:1;
}
/* 淘宝式中间卡片容器（核心布局修改） */
.login-card{
    position:relative;
    z-index:2;
    width:100%;
    max-width:800px;
    background:rgba(255,255,255,0.05);
    backdrop-filter:blur(20px);
    border-radius:12px;
    border:1px solid rgba(255,255,255,0.1);
    box-shadow:0 20px 40px rgba(0,0,0,0.2);
    display:flex;
    overflow:hidden;
}

/* 左侧：固定扫码区（淘宝布局） */
.qrcode-area{
    width:400px;
    padding:40px;
    border-right:1px solid rgba(255,255,255,0.1);
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    color:#fff;
}
.qrcode-title{
    font-size:18px;
    margin-bottom:30px;
    font-weight:500;
}
.qrcode-box{
    width:200px;
    height:200px;
    background:#fff;
    border-radius:8px;
    display:flex;
    align-items:center;
    justify-content:center;
    margin-bottom:15px;
}
.qrcode-box i{
    font-size:90px;
    color:#2F80ED;
}
.qrcode-desc{
    font-size:14px;
    color:#ccc;
    text-align:center;
}

/* 右侧：账号登录区（淘宝布局） */
.form-area{
    flex:1;
    padding:50px 40px;
    display:flex;
    flex-direction:column;
}
/* 密码/短信切换标签（淘宝样式） */
.form-tabs{
    display:flex;
    margin-bottom:30px;
}
.form-tab{
    font-size:18px;
    margin-right:25px;
    cursor:pointer;
    color:#ccc;
    position:relative;
}
.form-tab.active{
    color:#42a5ff;
    font-weight:600;
}
.form-tab.active::after{
    content:'';
    position:absolute;
    bottom:-8px;
    left:0;
    width:100%;
    height:2px;
    background:#42a5ff;
    border-radius:1px;
}
/* 表单容器 */
.form-wrap{
    display:none;
}
.form-wrap.show{
    display:block;
}
.form-item{
    margin-bottom:20px;
}
.input-group{
    position:relative;
}
.input-group i{
    position:absolute;
    left:16px;
    top:50%;
    transform:translateY(-50%);
    color:#42a5ff;
    font-size:16px;
}
.input-group input{
    width:100%;
    height:48px;
    background:rgba(255,255,255,0.06);
    border:1px solid rgba(255,255,255,0.1);
    border-radius:6px;
    padding:0 18px 0 50px;
    color:#fff;
    font-size:15px;
    outline:none;
    transition:0.3s;
}
.input-group input:focus{
    border-color:#42a5ff;
    background:rgba(66,165,255,0.08);
}
/* 滑动验证 */
.slide-verity{
    width:100%;height:48px;
    background:rgba(255,255,255,0.06);
    border:1px solid rgba(255,255,255,0.1);
    border-radius:6px;
    position:relative;overflow:hidden;
    margin-bottom:15px;
}
.slide-bg{
    position:absolute;left:0;top:0;
    width:0;height:100%;
    background:rgba(66,165,255,0.15);
    transition:width 0.05s;
}
.slide-btn{
    position:absolute;left:0;top:0;
    width:48px;height:48px;
    background:#42a5ff;
    display:flex;align-items:center;justify-content:center;
    color:#fff;cursor:pointer;transition:all 0.05s;z-index:2;
    border-radius:6px;
}
.slide-text{
    position:absolute;width:100%;height:100%;
    display:flex;align-items:center;justify-content:center;
    color:#ccc;font-size:14px;z-index:1;
}
.slide-success .slide-btn{background:#00c851;}
/* 登录按钮 */
.login-btn{
    width:100%;
    height:48px;
    background:linear-gradient(90deg,#2F80ED,#42a5ff);
    color:#fff;
    border:none;
    border-radius:6px;
    font-size:16px;
    font-weight:600;
    cursor:pointer;
    transition:0.3s;
    margin-bottom:15px;
}
.login-btn:hover{
    box-shadow:0 5px 15px rgba(66,165,255,0.3);
}
/* 底部链接 */
.form-links{
    display:flex;
    justify-content:space-between;
    font-size:14px;
    margin-bottom:20px;
}
.form-links a{
    color:#42a5ff;
    text-decoration:none;
}
.agreement{
    font-size:12px;
    color:#999;
}
.agreement a{
    color:#42a5ff;
    text-decoration:none;
}
/* 短信登录验证码按钮 */
.get-code-btn{
    width:120px;height:48px;
    background:rgba(66,165,255,0.2);
    border:1px solid #42a5ff;
    border-radius:6px;
    color:#42a5ff;
    cursor:pointer;
    font-size:14px;
}
.code-row{
    display:flex;gap:10px;
}
.code-row .input-group{flex:1;}

/* 移动端适配（淘宝同款堆叠） */
@media(max-width:768px){
    .login-card{
        flex-direction:column;
        max-width:400px;
    }
    .qrcode-area{
        width:100%;
        border-right:none;
        border-bottom:1px solid rgba(255,255,255,0.1);
        padding:30px 20px;
    }
    .form-area{
        padding:30px 20px;
    }
}