/* 在研项目页专属样式 */
/* 头部Banner */
.research-banner {
    height: 200px;
    position: relative;
    overflow: hidden;
    margin-bottom: 40px;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url(images/research-banner.jpg) center/cover no-repeat;
    transition: background 0.3s ease;
}
body.night-mode .research-banner {
    background: linear-gradient(rgba(0,0,0,0.8), rgba(0,0,0,0.8)), url(images/research-banner-night.jpg) center/cover no-repeat;
}
.research-banner-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: #fff;
    z-index: 10;
}
.research-banner-text h1 {
    font-size: 28px;
    margin-bottom: 8px;
    letter-spacing: 1px;
}
.research-banner-text p {
    font-size: 16px;
    opacity: 0.9;
}

/* 项目卡片容器 */
.research-container {
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(22,93,255,0.08);
    padding: 24px;
    margin-bottom: 60px;
    /* 新增：容器内添加内边距，避免卡片贴边 */
    display: flex;
    flex-direction: column;
    gap: 24px; /* 核心：卡片之间的间距（替代margin，更优雅） */
}
body.night-mode .research-container {
    background-color: #2C3036;
    box-shadow: 0 2px 12px rgba(0,0,0,0.3);
}

/* 项目信息网格 */
.research-grid {
    display: grid;
    grid-template-columns: 2fr 1fr; /* 卡片内部左右分栏保持不变 */
    gap: 24px; /* 卡片内部子元素间距 */
    padding: 20px; /* 卡片内边距，增强视觉包裹感 */
    background-color: #f9fafb; /* 卡片背景色，区分容器和卡片 */
    border-radius: 6px; /* 卡片圆角，更美观 */
}

.research-left, .research-right {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.research-item {
    font-size: 14px;
    line-height: 1.8;
}
.research-item strong {
    color: #000;
    font-weight: 600;
}

.research-item span {
    color: #4E5969;
    margin-top: 4px;
}
body.night-mode .research-item strong {
    color: #fff;
}
.research-item p {
    color: #4E5969;
    margin-top: 4px;
}
body.night-mode .research-item p {
    color: #E5E6EB;
}

/* 进度条模块 */
.progress-group {
    margin-top: 16px;
}

.progress-fill{
    transition: all 1s ease;
}

.progress-label {
    display: flex;
    justify-content: space-between;
    margin-bottom: 8px;
    font-size: 14px;
    color: #4E5969;
}
body.night-mode .progress-label {
    color: #E5E6EB;
}
.progress-bar {
    width: 100%;
    height: 12px;
    background-color: #F2F3F5;
    border-radius: 6px;
    overflow: hidden;
}
body.night-mode .progress-bar {
    background-color: #373B41;
}
.progress-fill {
    height: 100%;
    background-color: #D32F2F;
    border-radius: 6px;
}
.progress-btn {
    margin-top: 8px;
    padding: 4px 12px;
    background-color: #FFD700;
    /* background-color: #355ff9; */
    color: #000;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    font-weight: 600;
}

/* 新增：更新时间模块样式 */
.update-time {
    /* margin-left: 370px; */
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid #E5E6EB; /* 分隔线，区分进度条和更新时间 */
}
body.night-mode .update-time {
    border-top-color: #4E5969; /* 夜间模式分隔线颜色 */
}
.update-time strong {
    color: #6E7681; /* 弱化标题颜色，突出内容 */
    font-weight: 500;
}
.update-time span {
    color: #165DFF; /* 强调更新时间，用主题色 */
    font-size: 13px; /* 略小字号，不抢焦点 */
}
body.night-mode .update-time span {
    color: #60A5FA; /* 夜间模式主题色 */
}

/* 项目切换指示器 */
.research-switch {
    display: flex;
    gap: 8px; /* 缩小间距适配数字页码 */
    justify-content: center;
    margin-top: 40px;
    margin-bottom: 20px;
    align-items: center;
}

/* 1. 页码数字 - 改为数字样式（核心修改） */
.research-switch .page-num {
    display: inline-flex; /* 改为flex实现文字居中 */
    align-items: center;
    justify-content: center;
    width: 32px; /* 调整宽度适配数字 */
    height: 32px; /* 调整高度适配数字 */
    border-radius: 4px; /* 改为圆角矩形，更适配数字 */
    background-color: #F2F3F5; /* 浅背景色 */
    color: #4E5969; /* 数字颜色 */
    font-size: 14px; /* 数字字号 */
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-indent: 0; /* 恢复文字显示（移除原隐藏） */
    overflow: visible; /* 恢复文字显示 */
}
.research-switch .page-num.active {
    background-color: #165DFF; /* 激活态背景 */
    color: #FFFFFF; /* 激活态文字白色 */
    transform: scale(1.05); /* 轻微放大，替代原圆点的scale */
    box-shadow: 0 0 8px rgba(22, 93, 255, 0.4);
}
.research-switch .page-num:hover:not(.active) {
    background-color: #E5E6EB; /* 悬停态背景 */
    color: #165DFF; /* 悬停态文字颜色 */
    transform: scale(1.05);
}

/* 2. 上一页/下一页*/
.research-switch .page-prev,
.research-switch .page-next {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px; /* 同步调整上下页按钮尺寸，和数字页码一致 */
    height: 32px;
    border-radius: 4px; /* 改为圆角矩形，统一风格 */
    background-color: #F2F3F5;
    color: #4E5969;
    font-size: 14px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
}
/* 上下页悬停态  */
.research-switch .page-prev:hover:not(.disabled),
.research-switch .page-next:hover:not(.disabled) {
    background-color: #165DFF;
    color: #FFFFFF;
}
/* 上下页禁用态*/
.research-switch .page-prev.disabled,
.research-switch .page-next.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    background-color: #F2F3F5;
    color: #C0C4CC; /* 箭头字符变浅 */
}

/* 3. 省略号样式 */
.research-switch .page-ellipsis {
    color: #4E5969;
    font-size: 14px;
    line-height: 32px; /* 对齐数字页码高度 */
}

/* 夜间模式适配 */
body.night-mode .research-switch .page-num {
    background-color: #373B41;
    color: #E5E6EB;
}
body.night-mode .research-switch .page-num.active {
    background-color: #4080FF;
    color: #FFFFFF;
    box-shadow: 0 0 8px rgba(64, 128, 255, 0.5);
}
body.night-mode .research-switch .page-num:hover:not(.active) {
    background-color: #4E5969;
    color: #FFFFFF;
}

body.night-mode .research-switch .page-prev,
body.night-mode .research-switch .page-next {
    background-color: #373B41;
    color: #E5E6EB;
}
body.night-mode .research-switch .page-prev:hover:not(.disabled),
body.night-mode .research-switch .page-next:hover:not(.disabled) {
    background-color: #4080FF;
    color: #FFFFFF;
}
body.night-mode .research-switch .page-prev.disabled,
body.night-mode .research-switch .page-next.disabled {
    background-color: #373B41;
    color: #4E5969;
}

body.night-mode .research-switch .page-ellipsis {
    color: #E5E6EB;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .research-banner {
        height: 150px;
    }
    .research-banner-text h1 {
        font-size: 22px;
    }
    .research-grid {
        grid-template-columns: 1fr; /* 补充：移动端卡片内部改为单列 */
        gap: 16px;
        padding: 16px;
        margin: 0; /* 移除原margin，改用容器gap */
        padding-bottom: 0;
    }
    .research-container {
        gap: 16px; /* 移动端卡片间距缩小 */
        padding: 16px;
    }
    .research-switch {
        gap: 6px; /* 移动端数字页码间距更小 */
        margin-top: 30px;
    }
    /* 移动端数字页码缩小 */
    .research-switch .page-num {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
    .research-switch .page-num.active {
        transform: scale(1.05);
    }
    /* 移动端上下页按钮缩小 */
    .research-switch .page-prev,
    .research-switch .page-next {
        width: 28px;
        height: 28px;
        font-size: 12px;
    }
    /* 移动端省略号对齐 */
    .research-switch .page-ellipsis {
        line-height: 28px;
        font-size: 12px;
    }
    /* 移动端更新时间适配 */
    .update-time {
        /* margin-left: 490px; */
        margin-top: 12px;
        padding-top: 10px;
    }
    .update-time span {
        font-size: 12px;
    }
}