/**
* about-us.css
* 
* 作者：莫哥
* 日期：2026/06/01
* 版本：1.0.0
*
* 统一字体大小规范 */
.about-us-page {
    padding-top: 70px !important;
    min-height: 100vh !important;
}
.page-title {
    font-size: 26px;   
    font-weight: 700;
    color: #333;
}

.about-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 20px rgba(0,0,0,0.08);
    border: 1px solid #f0f0f0;
    transition: box-shadow 0.3s ease;
}
.about-card:hover {
    box-shadow: 0 8px 35px rgba(0,0,0,0.12);
}
.about-card .about-img {
    width: 380px;
    height: 380px;
    object-fit: cover;
    display: block;
}
.about-card .about-body {
    padding: 40px 20px;
    position: relative;
}
.about-card .about-title {
    font-size: 18px;        /* 标签标题 14px */
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 16px;
    position: relative;
    padding-bottom: 12px;
}
.about-card .about-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 3px;
    background: linear-gradient(90deg, #4A90D9, #764ba2);
    border-radius: 2px;
}
.about-card .about-content {
    font-size: 14px;        /* 正文文本 12px */
    line-height: 1.8;       /* 行高 1.8 */
    color: #555;
    margin-top: 12px;
}
.about-card .about-content p {
    margin-bottom: 12px;
}
.about-card .detail-link {
    text-align: right;
    margin-top: 15px;
    font-size: 12px;        /* 普通文字链接 12px */
    font-weight: 600;
    color: #e74c3c;
    cursor: pointer;
    transition: color 0.2s;
}
.about-card .detail-link:hover {
    color: #c0392b;
    text-decoration: underline;
}

@media (max-width: 768px) {
    .about-card .about-img {
        width: 100%;
        height: auto;
        aspect-ratio: 1/1;
    }
    .about-card .about-body {
        padding: 25px 15px;
    }
    .about-card .about-title {
        font-size: 14px;
    }
    .about-card .about-content {
        font-size: 12px;
    }
    .about-card .detail-link {
        font-size: 12px;
        margin-top: 10px;
    }
}
/* ===== 视频模块（播放器 + 播放列表） ===== */
.video-module-row {
    margin-bottom: 30px;
}

/* 播放器容器 */
.video-module-wrapper {
    background: #000;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    position: relative;
}
.video-module-wrapper .about-video {
    width: 100%;
    display: block;
    max-height: 600px;
    object-fit: contain;
    background: #1a1a2e;
}
.video-module-wrapper .video-title {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px 20px 15px;
    background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
    color: #fff;
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    text-shadow: 0 2px 8px rgba(0,0,0,0.5);
    pointer-events: none;
}

/* 播放列表 */
.video-playlist {
    background: #f8f9fa;
    border-radius: 12px;
    padding: 15px;
    height: 100%;
    max-height: 600px;
    display: flex;
    flex-direction: column;
    border: 1px solid #e9ecef;
}
.playlist-title {
    font-size: 16px;
    font-weight: 700;
    color: #1a1a2e;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid #dee2e6;
}
.playlist-items {
    list-style: none;
    padding: 0;
    margin: 0;
    overflow-y: auto;
    flex: 1;
}
.playlist-item {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    gap: 10px;
    border-bottom: 1px solid #f1f3f5;
}
.playlist-item:hover {
    background: #e9ecef;
}
.playlist-item.active {
    background: #e2e8f0;
    border-left: 4px solid #007bff;
}
.playlist-index {
    font-weight: 600;
    color: #6c757d;
    font-size: 13px;
    min-width: 24px;
}
.playlist-title-text {
    flex: 1;
    font-size: 14px;
    color: #333;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.playlist-status {
    font-size: 12px;
    color: #007bff;
    font-weight: 600;
}
.playlist-item.active .playlist-status {
    color: #007bff;
}

/* ===== 响应式 ===== */
@media (max-width: 992px) {
    .video-playlist {
        max-height: 300px;
        margin-top: 15px;
    }
    .video-module-wrapper .about-video {
        max-height: 350px;
    }
}

@media (max-width: 768px) {
    .about-card .about-img {
        width: 100%;
        height: auto;
        aspect-ratio: 1/1;
    }
    .about-card .about-body {
        padding: 25px 15px;
    }
    .about-card .about-title {
        font-size: 14px;
    }
    .about-card .about-content {
        font-size: 12px;
    }
    .about-card .detail-link {
        font-size: 12px;
        margin-top: 10px;
    }

    .video-module-wrapper .about-video {
        max-height: 250px;
    }
    .video-module-wrapper .video-title {
        font-size: 14px;
        padding: 20px 12px 10px;
    }
    .playlist-item {
        padding: 8px 10px;
    }
    .playlist-title-text {
        font-size: 13px;
    }
}