body {
    --read-bg: #f6f1e7;
    --read-text: #333;
    background-color: var(--read-bg);
    color: var(--read-text);
    transition: background-color 0.3s, color 0.3s;
}

.site-header,
.site-footer {
    display: none;
}

.reader-layout {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 20px;
}

.reader-breadcrumb {
    font-size: 13px;
    color: #888;
    margin-bottom: 30px;
}

.reader-breadcrumb a {
    color: #888;
}

.reader-breadcrumb a:hover {
    color: var(--primary);
}

.reader-card {
    background: var(--read-bg);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.02);
    padding: 60px 80px;
    border-radius: 8px;
}

.chapter-title {
    font-size: 32px;
    font-weight: bold;
    text-align: center;
    margin-bottom: 20px;
    color: var(--read-text);
}

.chapter-meta {
    text-align: center;
    font-size: 13px;
    color: #888;
    margin-bottom: 50px;
    padding-bottom: 20px;
    border-bottom: 1px dashed rgba(0, 0, 0, 0.1);
}

.chapter-content {
    font-size: 20px;
    line-height: 2;
    color: var(--read-text);
    text-align: justify;
}

.chapter-content p {
    margin-bottom: 1.5em;
    text-indent: 2em;
}

.reader-cta {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px dashed rgba(0, 0, 0, 0.1);
    text-align: center;
}

.reader-cta-btn {
    background: var(--primary);
    color: #fff;
    border: 1px solid var(--primary);
    font-size: 18px;
    padding: 16px 48px;
    border-radius: 30px;
    box-shadow: 0 4px 12px rgba(240, 68, 68, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-bottom: 12px;
}

.reader-cta-btn:hover {
    color: #fff;
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.reader-cta-icon {
    vertical-align: middle;
}

.reader-cta-tip {
    font-size: 13px;
    color: #999;
}

.reader-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 60px;
}

.nav-btn {
    display: inline-block;
    padding: 12px 30px;
    background: #fff;
    color: var(--text-main);
    border-radius: 24px;
    font-size: 16px;
    border: 1px solid #ddd;
    transition: all 0.2s;
}

.nav-btn:hover:not([disabled]) {
    border-color: var(--primary);
    color: var(--primary);
}

.nav-btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
}

.nav-btn-primary {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
}

.nav-btn-primary:hover {
    color: #fff !important;
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.reader-toolbar {
    position: fixed;
    right: 20px;
    bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tool-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: #fff;
    border: 1px solid #ddd;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: #666;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.tool-btn:hover {
    color: var(--primary);
    border-color: var(--primary);
}

body.theme-dark {
    --read-bg: #1a1a1a;
    --read-text: #a0a0a0;
}

body.theme-dark .reader-card {
    background: #222;
    border-color: #333;
}

body.theme-dark .nav-btn {
    background: #333;
    color: #a0a0a0;
    border-color: #444;
}

body.theme-dark .tool-btn {
    background: #333;
    color: #a0a0a0;
    border-color: #444;
}

body.theme-dark .chapter-meta {
    border-bottom-color: #333;
}

@media (max-width: 768px) {
    .reader-layout {
        padding: 0;
    }

    .reader-card {
        padding: 30px 20px;
        border-radius: 0;
        border: none;
    }

    .chapter-title {
        font-size: 24px;
    }

    .chapter-content {
        font-size: 18px;
    }

    .reader-toolbar {
        display: none;
    }

    .reader-nav {
        flex-direction: column;
    }

    .nav-btn {
        text-align: center;
    }

    .reader-cta-btn {
        width: 100%;
        padding: 14px 18px;
        font-size: 16px;
    }
}