/* 重置和基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,body {
    height: 100%;
    overflow: auto;
    background: #000;
    /* overflow: hidden; */
}

.background-container {
    width: 100%;
    height: 100%;
    position: relative;
    background: #000;
    max-width: 1920px;

}
.gsmh{
    position: absolute;
    width: 100%;
    height: 100%;
    left: 0;
    top: 0;
    background-size: 100% 100%;
}

.bg-content{
    height: 100%;
}
/* PC端背景图片 */
.background-inner {
    position: relative;
    z-index: 10;
    width: 100%;
    height: 100%;
    background-image: url('1920x1080网页画面.jpg');
    background-size: 100% 100%;
    height: 900px;
    background-position: center;
    background-repeat: no-repeat;
    display: block;
}

/* 表单样式 */
.form-container {
    background: rgba(255, 255, 255, 0.95);
    padding: 30px;
    margin: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.contact-form {
    max-width: 500px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: #cc0000;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: #cc0000;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background: #b30000;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(204, 0, 0, 0.3);
}

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* 隐私说明样式 */
.privacy-notice {
    margin-top: 30px;
    padding: 20px;
    background: rgba(0, 0, 0, 0.05);
    border-radius: 8px;
    border-left: 4px solid #4ecdc4;
}

.privacy-notice h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: bold;
}

.privacy-notice p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 12px;
    text-align: justify;
}

.privacy-notice p:last-child {
    margin-bottom: 0;
}

.privacy-link {
    color: #4ecdc4;
    text-decoration: none;
    font-weight: bold;
}

.privacy-link:hover {
    text-decoration: underline;
}

/* 表单说明样式 */
.form-note {
    background: rgba(204, 0, 0, 0.1);
    border: 1px solid #cc0000;
    border-radius: 5px;
    padding: 12px;
    margin-bottom: 20px;
    text-align: center;
}

.form-note p {
    color: #cc0000;
    font-size: 14px;
    font-weight: bold;
    margin: 0;
}

/* 省市选择器样式 */
.region-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.region-selector select {
    margin-bottom: 0;
}

/* 活动介绍样式 */
.activity-info {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    border-left: 4px solid #cc0000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.activity-info h3 {
    color: #cc0000;
    font-size: 18px;
    font-weight: bold;
    margin-bottom: 15px;
    text-align: center;
}

.activity-info p {
    color: #333;
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 15px;
    text-align: justify;
}

.activity-info p:last-child {
    margin-bottom: 0;
}

.ti-link {
    color: #cc0000;
    text-decoration: none;
    font-weight: bold;
    word-break: break-all;
}

.ti-link:hover {
    text-decoration: underline;
    color: #b30000;
}

/* 响应式设计 - 移动设备 */
@media (max-width: 1024px) {
    .background-inner{
        background-image: url('1080x1920手机画面.jpg');
        background-position: top;
        /* height: 700px; */
    }
}

@media  (min-width: 1024px) and (max-width: 1524px)  {
    .background-inner{
        background-position: top;
        height: 700px;
    }
}


@media (max-width: 768px) {
    .background-inner{
        background-image: url('1080x1920手机画面.jpg');
        background-position: top;
        height: 700px;
    }
    .gsmh{
        display: none;
    }
    .form-container {
        margin: 10px;
        padding: 20px;
    }
    
    .form-group input,
    .form-group textarea,
    .form-group select {
        font-size: 16px;
    }
    
    .region-selector {
        grid-template-columns: 1fr;
        gap: 8px;
    }
    
    .activity-info {
        padding: 20px;
        margin-top: 20px;
    }
    
    .activity-info h3 {
        font-size: 16px;
    }
    
    .activity-info p {
        font-size: 13px;
    }
}