.ebook-page {
    background: #fff;
    padding: 28px 34px;
    min-height: 520px;
}

.ebook-title {
    font-size: 28px;
    font-weight: bold;
    color: #333;
    border-bottom: 1px solid #eee;
    padding-bottom: 18px;
    margin-bottom: 24px;
}

.ebook-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 26px 22px;
}

.ebook-card {
    display: block;
    color: #333;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 14px;
    background: #fff;
    transition: all .2s ease;
}

.ebook-card:hover {
    border-color: #3dae7f;
    box-shadow: 0 8px 24px rgba(33, 128, 92, .12);
    transform: translateY(-2px);
}

.ebook-card img {
    width: 100%;
    height: 230px;
    object-fit: cover;
    border-radius: 4px;
    background: #f5f5f5;
}

.ebook-card strong {
    display: block;
    font-size: 18px;
    line-height: 26px;
    height: 52px;
    overflow: hidden;
    margin-top: 12px;
}

.ebook-card span,
.ebook-card em {
    display: block;
    color: #888;
    line-height: 24px;
    font-style: normal;
}

.ebook-detail {
    background: #fff;
    padding: 34px;
    min-height: 560px;
}

.ebook-cover {
    float: left;
    width: 210px;
}

.ebook-cover img {
    width: 180px;
    height: 250px;
    object-fit: cover;
    border: 1px solid #eee;
}

.ebook-meta {
    margin-left: 230px;
    min-height: 260px;
}

.ebook-meta h1 {
    font-size: 30px;
    color: #333;
    margin-bottom: 22px;
}

.ebook-meta p {
    font-size: 16px;
    line-height: 32px;
    color: #555;
}

.ebook-actions {
    margin-top: 24px;
}

.ebook-search {
    display: flex;
    gap: 12px;
    margin: 0 0 24px;
}

.ebook-search input {
    flex: 1;
    height: 42px;
    line-height: 42px;
    border: 1px solid #dcdcdc;
    border-radius: 4px;
    padding: 0 14px;
    font-size: 15px;
}

.ebook-search button {
    width: 96px;
    border: none;
    border-radius: 4px;
    background: #3dae7f;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
}

.ebook-read-btn {
    display: inline-block;
    padding: 10px 26px;
    border-radius: 4px;
    margin-right: 12px;
    color: #fff;
    background: #3dae7f;
}

.ebook-section {
    clear: both;
    border-top: 1px solid #eee;
    padding-top: 24px;
    margin-top: 24px;
}

.ebook-section h2 {
    font-size: 22px;
    margin-bottom: 14px;
}

.ebook-section p {
    color: #555;
    font-size: 16px;
    line-height: 30px;
    white-space: pre-wrap;
}

.ebook-reader-wrap {
    max-width: 1180px;
    margin: 0 auto;
    background: #fff;
    min-height: 720px;
}

.ebook-reader-head {
    height: 64px;
    line-height: 64px;
    padding: 0 24px;
    border-bottom: 1px solid #e8e8e8;
}

.ebook-reader-head h1 {
    float: left;
    font-size: 22px;
    color: #333;
}

.ebook-reader-head a {
    float: right;
    color: #3dae7f;
}

.ebook-reader iframe {
    width: 100%;
    height: 760px;
    border: 0;
}

.ebook-pdf-layout,
.ebook-epub-layout {
    display: flex;
    align-items: stretch;
    min-height: 760px;
}

.ebook-toc {
    width: 240px;
    flex: 0 0 240px;
    border-right: 1px solid #e8e8e8;
    background: #fbfaf6;
    padding: 22px 16px;
    box-sizing: border-box;
    overflow-y: auto;
}

.ebook-toc h3 {
    font-size: 20px;
    color: #333;
    margin-bottom: 14px;
}

.ebook-toc p {
    color: #777;
    line-height: 24px;
}

.ebook-toc a {
    display: block;
    color: #555;
    line-height: 24px;
    padding: 10px 12px;
    border-radius: 4px;
    margin-bottom: 6px;
}

.ebook-toc a.active,
.ebook-toc a:hover {
    color: #fff;
    background: #3dae7f;
}

.ebook-reader-main {
    flex: 1;
    min-width: 0;
}

.ebook-reader-main iframe {
    width: 100%;
    height: 760px;
    border: 0;
}

.ebook-pdf-jump {
    display: flex;
    gap: 8px;
    margin-top: 14px;
}

.ebook-pdf-jump input {
    width: 82px;
    height: 34px;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 0 8px;
}

.ebook-pdf-jump button,
.ebook-txt-toolbar a {
    border: 0;
    border-radius: 4px;
    color: #fff;
    background: #3dae7f;
    cursor: pointer;
    padding: 0 14px;
    height: 34px;
    line-height: 34px;
}

.ebook-txt-toolbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 18px;
    padding: 18px;
    border-bottom: 1px solid #eee;
}

.ebook-txt-toolbar.bottom {
    border-top: 1px solid #eee;
    border-bottom: 0;
}

.ebook-txt-reader {
    padding: 34px 54px;
    font-size: 18px;
    line-height: 34px;
    color: #333;
    background: #fbfaf6;
    min-height: 720px;
}

.ebook-epub-content {
    flex: 1;
    min-width: 0;
    padding: 38px 54px;
    font-size: 18px;
    line-height: 34px;
    color: #333;
    background: #fff;
    box-sizing: border-box;
}

.ebook-epub-content img {
    max-width: 100%;
    height: auto;
}

.ebook-error {
    padding: 60px;
    text-align: center;
    color: #a94442;
    font-size: 18px;
}

.ebook-unsupported,
.ebook-empty {
    background: #fff;
    padding: 60px;
    text-align: center;
    color: #666;
    font-size: 18px;
}

@media (max-width: 768px) {
    .ebook-pdf-layout,
    .ebook-epub-layout {
        display: block;
    }

    .ebook-toc {
        width: auto;
        max-height: 220px;
        border-right: 0;
        border-bottom: 1px solid #e8e8e8;
    }

    .ebook-reader-main iframe,
    .ebook-reader iframe {
        height: 620px;
    }

    .ebook-txt-reader,
    .ebook-epub-content {
        padding: 22px;
        font-size: 16px;
        line-height: 30px;
    }
}