/* 基本版面設置 */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #F4F6F9;
    color: #333;
    margin: 0;
    padding: 0;
}

.main-content {
    padding: 0px;
}

.container-lg {
    max-width: 1400px;
    margin: 0 auto;
}

h2 {
    font-size: 2rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    position: relative;
    background: linear-gradient(45deg, rgba(0, 150, 150, 1), rgba(0, 50, 150, 1));
    color: transparent;
    -webkit-background-clip: text;
    background-clip: text;
    background-size: 5%;
    text-shadow: 3px 3px 8px rgba(0, 0, 0, 0.2);
}

.text-info-t {
    font-weight: 600;
    font-size: 18px;
    display: inline-block;
}

.text-info-v {
    font-weight: 500;
    font-size: 18px;
    display: inline-block;
}

.separator-line {
    border: 0;
    height: 1px;
    background: linear-gradient(90deg, #34c759, #ff3b30);
    margin: 30px 0;
    box-shadow: 0 0 5px rgba(0, 120, 120, 0.5);
}

.img-container img {
    width: 100%;
    height: 550px;
    object-fit: contain;
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
}

.content-container {
    max-width: 100%;
    word-wrap: break-word;
}

.file-preview iframe {
    width: 100%;
    height: 600px;
    border: 1px solid #ccc;
}

.min-width-150 {
    min-width: 150px;
}

@media (max-width: 1500px) {
    .container-lg {
        padding: 0 50px;
    }
}

@media (max-width: 1500px) {
    .container-lg {
        padding: 0 50px;
    }

    .item-thumbnail {
        width: 50px;
        height: 50px;
    }
}

@media (max-width: 1080px) {
    .img-container img {
        height: 100%;
    }
}

@media (max-width: 800px) {
    .img-container img {
        height: 100%;
    }
    .post-title {
        font-size: 26px;
    }
    .item-thumbnail {
        width: 40px;
        height: 40px;
    }
}