.slider-captcha-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

.slider-captcha-container {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    width: 340px;
    position: relative;
    text-align: center;
}

.slider-captcha-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.slider-captcha-title {
    font-size: 16px;
    font-weight: bold;
    color: #333;
}

.slider-captcha-close {
    cursor: pointer;
    font-size: 20px;
    color: #999;
}

.slider-captcha-box {
    position: relative;
    width: 300px;
    height: 150px;
    background: #f0f0f0;
    margin: 0 auto;
    overflow: hidden;
    border: 1px solid #ddd;
}

.slider-captcha-bg {
    width: 100%;
    height: 100%;
    display: block;
}

.slider-captcha-piece {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    cursor: pointer;
}

.slider-captcha-track {
    position: relative;
    width: 300px;
    height: 40px;
    background: #eef1f8;
    margin: 15px auto 0;
    border-radius: 20px;
    box-shadow: inset 0 0 2px #ccc;
}

.slider-captcha-mask {
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    background: #d1e9fe;
    border-radius: 20px 0 0 20px;
    width: 0;
}

.slider-captcha-slider {
    position: absolute;
    top: 0;
    left: 0;
    width: 40px;
    height: 40px;
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 0 2px rgba(0,0,0,0.3);
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background 0.2s;
    z-index: 3;
    font-size: 20px;
    color: #666;
}

.slider-captcha-slider:hover {
    background: #1991fa;
    color: #fff;
}

.slider-captcha-slider.active {
    background: #1991fa;
    color: #fff;
}

.slider-captcha-text {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    line-height: 40px;
    text-align: center;
    font-size: 14px;
    color: #888;
    user-select: none;
}

.slider-captcha-refresh {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 20px;
    height: 20px;
    cursor: pointer;
    z-index: 4;
    background: rgba(255,255,255,0.8);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
}