.wechat-login-modal{position:fixed;inset:0;z-index:11000;display:none;overflow-y:auto;padding:20px;box-sizing:border-box}
.wechat-login-modal.show{display:flex;align-items:center;justify-content:center;min-height:100vh}
.wechat-login-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.45);backdrop-filter:saturate(180%) blur(2px)}
.wechat-login-dialog{position:relative;z-index:1;width:100%;max-width:520px;background:#fff;border-radius:16px;box-shadow:0 24px 48px rgba(0,0,0,.2);padding:28px;margin:auto}
.wechat-login-close{position:absolute;top:10px;right:12px;border:0;background:transparent;font-size:22px;cursor:pointer;color:#666}
.wechat-login-title{font-size:22px;font-weight:700;color:#333;margin-bottom:18px;text-align:center}
.wechat-login-step{margin-bottom:18px}
.wechat-login-step-text{font-size:15px;color:#333;margin-bottom:10px}
.wechat-login-qr{width:200px;height:200px;margin:10px auto;border:2px solid #e5e7eb;border-radius:10px;overflow:hidden;display:flex;align-items:center;justify-content:center}
.wechat-login-qr img{width:100%;height:100%;object-fit:cover;display:block;max-width:100%;max-height:100%}
.wechat-login-hint{font-size:13px;color:#666}
.wechat-login-code-inputs{display:flex;justify-content:center;gap:8px;margin:14px 0;flex-wrap:wrap}
.wechat-login-code{width:42px;height:44px;border:2px solid #e5e7eb;border-radius:8px;text-align:center;font-size:18px;font-weight:700;outline:0;background:#fff;transition:border-color .2s;touch-action:manipulation;-webkit-tap-highlight-color:transparent;-webkit-appearance:none}
.wechat-login-code:focus{border-color:#10b981;box-shadow:0 0 0 2px rgba(16,185,129,.15)}
.wechat-login-code:active{transform:scale(0.95)}
.wechat-login-submit{display:block;width:100%;height:48px;border:0;border-radius:24px;background:#10b981;color:#fff;font-weight:700;font-size:15px;cursor:pointer;transition:background-color .2s;touch-action:manipulation;-webkit-tap-highlight-color:transparent}
.wechat-login-submit:hover{background:#0ea371}
.wechat-login-submit:active{transform:scale(0.98)}
.wechat-login-submit:disabled{background:#c7c7c7;cursor:not-allowed;transform:none}
/* 手机端优化 */
@media (max-width: 768px) {
    .wechat-login-modal {
        padding: 16px;
        -webkit-overflow-scrolling: touch;
        overscroll-behavior: contain;
    }
    
    .wechat-login-modal.show {
        align-items: flex-start;
        padding-top: 10vh;
    }
    
    .wechat-login-dialog {
        max-width: 100%;
        padding: 24px 20px;
        border-radius: 12px;
        margin: 0;
    }
    
    .wechat-login-title {
        font-size: 20px;
        margin-bottom: 16px;
    }
    
    .wechat-login-step {
        margin-bottom: 16px;
    }
    
    .wechat-login-step-text {
        font-size: 14px;
        text-align: center;
        line-height: 1.5;
    }
    
    .wechat-login-qr {
        width: 180px;
        height: 180px;
        margin: 12px auto;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .wechat-login-hint {
        font-size: 12px;
        text-align: center;
        margin-top: 8px;
    }
    
    .wechat-login-code-inputs {
        gap: 6px;
        margin: 16px 0;
        justify-content: center;
        padding: 0 10px;
    }
    
    .wechat-login-code {
        width: 40px;
        height: 44px;
        font-size: 16px;
        border-radius: 6px;
        border-width: 2px;
        font-weight: 700;
    }
    
    .wechat-login-submit {
        height: 48px;
        font-size: 15px;
        border-radius: 12px;
        margin-top: 8px;
    }
}

@media (max-width: 480px) {
    .wechat-login-modal {
        padding: 12px;
    }
    
    .wechat-login-dialog {
        padding: 20px 16px;
    }
    
    .wechat-login-title {
        font-size: 18px;
        margin-bottom: 14px;
    }
    
    .wechat-login-step-text {
        font-size: 13px;
    }
    
    .wechat-login-qr {
        width: 160px;
        height: 160px;
        margin: 10px auto;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .wechat-login-code {
        width: 36px;
        height: 40px;
        font-size: 15px;
        border-width: 2px;
        font-weight: 700;
    }
    
    .wechat-login-submit {
        height: 44px;
        font-size: 14px;
    }
}

@media (max-width: 360px) {
    .wechat-login-modal {
        padding: 8px;
    }
    
    .wechat-login-dialog {
        padding: 16px 12px;
    }
    
    .wechat-login-title {
        font-size: 16px;
    }
    
    .wechat-login-qr {
        width: 140px;
        height: 140px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .wechat-login-code {
        width: 32px;
        height: 36px;
        font-size: 14px;
        border-width: 2px;
        font-weight: 700;
    }
    
    .wechat-login-code-inputs {
        gap: 4px;
    }
}

/* 安全区域适配 */
@supports (padding: max(0px)) {
    .wechat-login-modal {
        padding-left: max(16px, env(safe-area-inset-left));
        padding-right: max(16px, env(safe-area-inset-right));
        padding-top: max(16px, env(safe-area-inset-top));
        padding-bottom: max(16px, env(safe-area-inset-bottom));
    }
}

/* 横屏模式优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .wechat-login-modal.show {
        align-items: center;
        padding-top: 5vh;
    }
    
    .wechat-login-dialog {
        max-height: 90vh;
        overflow-y: auto;
    }
    
    .wechat-login-qr {
        width: 120px;
        height: 120px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}