* {
    margin: 0;
    padding: 0;
    box-sizing: border-box
}

:root {
    --bg-color: #f5f5f5;
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --text-color: #333;
    --text-light: #666;
    --border-color: #e0e0e0;
    --card-bg: #ffffff;
    --hover-color: #ecf0f1;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --reader-bg: #ffffff;
    --reader-text: #333;
    --reader-border: #e0e0e0
}

[data-theme=dark] {
    --bg-color: #1a1a1a;
    --primary-color: #e0e0e0;
    --secondary-color: #4a9eff;
    --text-color: #e0e0e0;
    --text-light: #b0b0b0;
    --border-color: #333;
    --card-bg: #242424;
    --hover-color: #2d2d2d;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --reader-bg: #1e1e1e;
    --reader-text: #e0e0e0;
    --reader-border: #333
}

[data-theme=green] {
    --bg-color: #f5f5e8;
    --primary-color: #5a7a5a;
    --secondary-color: #7aa87a;
    --text-color: #3d4d3d;
    --text-light: #6a7a6a;
    --border-color: #eaeadb;
    --card-bg: #fafaf0;
    --hover-color: #f0f0e0;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    --reader-bg: #fefcf5;
    --reader-text: #3d4d3d;
    --reader-border: #d0d0c0
}

html {
    font-size: 16px;
    scroll-behavior: smooth
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color .3s ease, color .3s ease
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color .3s ease
}

a:hover {
    color: var(--secondary-color)
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px
}

.header {
    background-color: var(--card-bg);
    box-shadow: var(--shadow);
    transition: background-color .3s ease, box-shadow .3s ease
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    position: relative;
    gap: 1rem
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: .5rem;
    z-index: 1001
}

.logo:hover {
    opacity: .8
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex: 1
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1rem;
    align-items: center
}

.menu-toggle {
    display: none;
    background: 0 0;
    border: none;
    color: var(--text-color);
    padding: .5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    z-index: 1001;
    transition: all .3s ease
}

.menu-toggle.active {
    color: #fff
}

.nav-menu a {
    color: var(--text-color);
    text-decoration: none;
    font-size: 1rem;
    transition: color .3s ease;
    position: relative
}

.nav-menu a.active,
.nav-menu a:hover {
    color: var(--secondary-color)
}

.nav-menu a::after {
    content: "";
    display: inline-block;
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: all .3s ease
}

.nav-menu a.active::after,
.nav-menu a:hover::after {
    width: 100%
}

.nav-search {
    display: none;
    position: relative
}

.nav-search-input {
    height: 38px;
    padding: 0 2.5rem 0 1rem;
    border: 2px solid var(--border-color);
    border-radius: 20px;
    font-size: .9rem;
    background: var(--card-bg);
    color: var(--text-color);
    outline: 0;
    transition: border-color .3s ease, width .3s ease;
    box-sizing: border-box
}

.nav-search-input:focus {
    border-color: var(--secondary-color)
}

.nav-search-btn {
    position: absolute;
    right: .5rem;
    top: 50%;
    transform: translateY(-50%);
    background: 0 0;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1rem;
    padding: .25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color .3s ease
}

.nav-search-btn:hover {
    color: var(--secondary-color)
}

.theme-toggle {
    background: 0 0;
    border: 2px solid var(--border-color);
    color: var(--text-color);
    height: 38px;
    padding: 0 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-size: .9rem;
    line-height: 1rem;
    transition: all .3s ease;
    display: flex;
    align-items: center;
    gap: .5rem;
    white-space: nowrap;
    box-sizing: border-box
}

.theme-toggle:hover {
    background-color: var(--hover-color);
    border-color: var(--secondary-color)
}

.main-content {
    min-height: calc(100vh - 173px);
    padding: 2rem 0
}

.breadcrumb {
    margin-top: -1rem;
    margin-bottom: 1rem;
    padding: .75rem 0;
    font-size: .9rem;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: .5rem;
    list-style: none;
    margin: 0;
    padding: 0
}

.breadcrumb-item a {
    text-decoration: none;
    transition: color .3s ease
}

.breadcrumb-item.active {
    color: var(--text-light)
}

.breadcrumb-separator {
    color: var(--text-light);
    user-select: none
}

.page-title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    border-left: 4px solid var(--secondary-color);
    padding-left: 1rem
}

.flex-title {
    display: flex;
    justify-content: space-between
}

.book-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem
}

@media (min-width:768px) {
    .book-grid {
        grid-template-columns: repeat(2, 1fr)
    }
}

@media (min-width:1200px) {
    .book-grid {
        grid-template-columns: repeat(3, 1fr)
    }
}

.book-card {
    background-color: var(--card-bg);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform .3s ease, box-shadow .3s ease;
    text-decoration: none;
    color: var(--text-color);
    display: block
}

.book-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, .15)
}

.book-info {
    padding: 1rem
}

.book-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: .5rem;
    color: var(--text-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.book-card:hover .book-title {
    color: var(--secondary-color)
}

.book-author {
    font-size: .85rem;
    color: var(--text-light);
    margin-bottom: .5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.book-desc {
    font-size: .85rem;
    color: var(--text-light);
    line-height: 1.5;
    margin-bottom: .75rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    min-height: 2.55em
}

.book-badges {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
    align-items: center;
    margin-top: .75rem
}

.book-update-time {
    margin-top: .75rem;
    font-size: .85rem;
    color: var(--text-light);
    padding-top: .75rem;
    border-top: 1px solid var(--border-color)
}

.book-badge {
    display: inline-block;
    padding: .25rem .75rem;
    border-radius: 12px;
    font-size: .75rem;
    font-weight: 500;
    line-height: 1.5
}

.book-badge.category {
    background-color: var(--secondary-color);
    color: #fff
}

.book-badge.status {
    background-color: var(--hover-color);
    color: var(--text-color);
    border: 1px solid var(--border-color)
}

.book-badge.words {
    background-color: transparent;
    color: var(--text-light);
    border: 1px solid var(--border-color)
}

.book-list {
    list-style: none
}

.book-list-item {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    transition: background-color .3s ease, box-shadow .3s ease
}

.book-list-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, .15)
}

.book-list-item a {
    display: flex;
    gap: 1.5rem;
    text-decoration: none;
    color: var(--text-color)
}

.book-list-cover {
    flex-shrink: 0;
    width: 100px;
    height: 130px;
    border-radius: 4px;
    background: linear-gradient(135deg, var(--secondary-color), var(--primary-color));
    position: relative;
    overflow: hidden
}

.book-list-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover
}

.book-list-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between
}

.book-list-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: .5rem;
    color: var(--primary-color)
}

.book-list-desc {
    color: var(--text-light);
    font-size: .95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden
}

.book-list-meta {
    display: flex;
    gap: 1.5rem;
    font-size: .9rem;
    color: var(--text-light);
    flex-wrap: wrap
}

.update-list-wrapper {
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border-color)
}

.update-list-header {
    display: grid;
    grid-template-columns: 2.5fr 1.5fr 1fr 1fr 1.2fr;
    background: linear-gradient(135deg, var(--hover-color) 0, var(--card-bg) 100%);
    border-bottom: 2px solid var(--border-color);
    padding: .75rem 0
}

.update-header-cell {
    padding: .875rem 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    font-size: .9rem;
    white-space: nowrap;
    text-align: left
}

.update-header-cell:first-child {
    padding-left: 1.5rem
}

.update-list {
    display: flex;
    flex-direction: column
}

.update-item {
    display: grid;
    grid-template-columns: 2.5fr 1.5fr 1fr 1fr 1.2fr;
    border-bottom: 1px solid var(--border-color);
    transition: all .2s ease;
    position: relative
}

.update-item:last-child {
    border-bottom: none
}

.update-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background-color: var(--secondary-color);
    opacity: 0;
    transition: opacity .2s ease
}

.update-item:hover {
    background-color: var(--hover-color);
    transform: translateX(2px)
}

.update-item:hover::before {
    opacity: 1
}

.update-cell {
    padding: 1.125rem 1.25rem;
    color: var(--text-color);
    font-size: .95rem;
    display: flex;
    align-items: center;
    overflow: hidden;
    gap: .5rem
}

.update-cell:first-child {
    padding-left: 1.5rem;
    font-weight: 500
}

.update-cell a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color .2s ease;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1
}

.update-cell a:hover {
    color: var(--secondary-color)
}

.update-cell .book-badge {
    display: inline-block;
    flex-shrink: 0
}

.update-cell:last-child {
    color: var(--text-light);
    font-size: .9rem
}

.category-ranking-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem
}

@media (min-width:960px) {
    .category-ranking-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.ranking-module {
    background-color: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: transform .3s ease, box-shadow .3s ease
}

.ranking-module:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, .15)
}

.ranking-module-title {
    padding: .875rem 1.25rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-color);
    display: flex;
    align-items: center;
    gap: .5rem
}

.ranking-module-title::before {
    content: '';
    width: 3px;
    height: 1rem;
    background-color: var(--secondary-color);
    border-radius: 2px
}

.ranking-list {
    display: flex;
    flex-direction: column;
    padding: .25rem 0
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: .75rem;
    padding: .75rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    transition: all .3s ease;
    position: relative
}

.ranking-item:last-child {
    border-bottom: none
}

.ranking-item::before {
    content: counter(ranking-counter);
    counter-increment: ranking-counter;
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--hover-color);
    color: var(--text-light);
    border-radius: 50%;
    font-size: .7rem;
    font-weight: 600;
    transition: all .3s ease
}

.ranking-item:first-child::before {
    background: linear-gradient(135deg, gold, #ffed4e);
    color: #333
}

.ranking-item:nth-child(2)::before {
    background: linear-gradient(135deg, silver, #e8e8e8);
    color: #333
}

.ranking-item:nth-child(3)::before {
    background: linear-gradient(135deg, #cd7f32, #e6a85c);
    color: #fff
}

.ranking-item:hover::before {
    transform: scale(1.1)
}

.ranking-list {
    counter-reset: ranking-counter
}

.ranking-category {
    display: none
}

.ranking-title {
    flex: 1;
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: color .3s ease;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.ranking-title:hover {
    color: var(--secondary-color)
}

.ranking-author {
    flex-shrink: 0;
    color: var(--text-light);
    font-size: .85rem;
    white-space: nowrap;
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis
}

.book-detail {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem
}

.detail-header {
    margin-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
    position: relative
}

.detail-header::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 40%;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary-color), transparent)
}

.detail-info {
    width: 100%
}

.detail-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    line-height: 1.2;
    letter-spacing: -.02em;
    display: flex;
    justify-content: center
}

.detail-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    color: var(--text-light);
    font-size: .95rem;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, var(--hover-color) 0, var(--card-bg) 100%);
    border-radius: 10px;
    box-shadow: var(--shadow)
}

.detail-meta span {
    display: flex;
    align-items: center;
    gap: .5rem;
    position: relative;
    padding-right: 1rem
}

.detail-meta span:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 16px;
    background-color: var(--border-color)
}

.detail-meta span::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--secondary-color);
    flex-shrink: 0
}

.detail-meta .search {
    display: flex;
    align-items: center;
    gap: .75rem;
    width: 100%;
    max-width: 600px;
    margin: 0 auto
}

.detail-meta .search input[type=text] {
    flex: 1;
    height: 38px;
    padding: 0 1rem;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    font-size: .9rem;
    background: var(--card-bg);
    color: var(--text-color);
    outline: 0;
    transition: all .25s cubic-bezier(.4, 0, .2, 1);
    box-sizing: border-box
}

.detail-meta .search input[type=text]:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, .1)
}

.detail-meta .search input[type=text]::placeholder {
    color: var(--text-light)
}

.detail-meta .search button[type=submit] {
    height: 38px;
    padding: 0 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: .9rem;
    font-weight: 500;
    background-color: var(--secondary-color);
    color: #fff;
    cursor: pointer;
    transition: all .25s cubic-bezier(.4, 0, .2, 1);
    box-sizing: border-box;
    white-space: nowrap
}

.detail-meta .search button[type=submit]:hover {
    background-color: #2980b9;
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(52, 152, 219, .25)
}

.detail-meta .search button[type=submit]:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(52, 152, 219, .2)
}

.detail-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
    align-items: center;
    margin-bottom: 2rem
}

.comments-list {
    margin-bottom: 2rem
}

.comment-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.25rem;
    margin-bottom: 1rem;
    transition: all .3s ease
}

.comment-item:hover {
    box-shadow: var(--shadow);
    border-color: var(--secondary-color)
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: .75rem;
    padding-bottom: .75rem;
    border-bottom: 1px solid var(--border-color)
}

.comment-username {
    font-weight: 600;
    color: var(--secondary-color);
    font-size: .95rem
}

.comment-time {
    font-size: .85rem;
    color: var(--text-light)
}

.comment-content {
    color: var(--text-color);
    line-height: 1.8;
    font-size: .95rem;
    word-wrap: break-word;
    white-space: pre-wrap
}

.btn {
    padding: .5rem 2rem;
    border: none;
    border-radius: 8px;
    font-size: .95rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .25s cubic-bezier(.4, 0, .2, 1);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .5rem;
    position: relative;
    overflow: hidden;
    letter-spacing: .02em;
    box-sizing: border-box
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, .25);
    transform: translate(-50%, -50%);
    transition: width .5s ease, height .5s ease
}

.btn:hover::before {
    width: 300px;
    height: 300px
}

.btn:not(.detail-actions .btn)::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .2), transparent);
    transition: left .5s ease;
    pointer-events: none
}

.btn:not(.detail-actions .btn):hover::after {
    left: 100%
}

.btn-primary {
    background-color: var(--secondary-color);
    color: #fff;
    box-shadow: 0 2px 8px rgba(52, 152, 219, .25);
    border: none
}

.btn-primary:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(52, 152, 219, .35);
    color: var(--hover-color)
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(52, 152, 219, .25)
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-color);
    border: 1.5px solid var(--border-color);
    box-shadow: none;
    position: relative
}

.btn-secondary::before {
    background: rgba(52, 152, 219, .1)
}

.btn-secondary:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    background-color: rgba(52, 152, 219, .05);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(52, 152, 219, .15)
}

.btn-secondary:active {
    transform: translateY(0);
    box-shadow: none
}

.detail-content {
    margin-top: 0
}

.detail-section {
    margin-bottom: 1rem
}

.detail-section:last-child {
    margin-bottom: 0
}

.detail-section-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    color: var(--primary-color);
    border-left: 4px solid var(--secondary-color);
    padding-left: 1rem;
    padding-bottom: 0;
    border-bottom: none
}

.reading-progress {
    display: flex;
    align-items: center;
    gap: .75rem;
    font-size: .9rem;
    color: var(--text-light);
    padding: .875rem 1.25rem;
    background: linear-gradient(135deg, rgba(52, 152, 219, .1) 0, rgba(52, 152, 219, .05) 100%);
    border-radius: 8px;
    margin-bottom: 1.5rem;
    margin-top: .5rem;
    border: 1px solid rgba(52, 152, 219, .2)
}

.progress-label {
    font-weight: 500;
    color: var(--text-color)
}

.progress-text {
    color: var(--secondary-color);
    font-weight: 600
}

.progress-current {
    color: var(--text-color);
    font-weight: 500
}

.detail-description {
    line-height: 1.8;
    font-size: .95rem
}

.chapter-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: .5rem;
    margin-bottom: 1rem
}

.chapter-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all .3s ease;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden
}

.chapter-item:hover {
    border-color: var(--secondary-color);
    background-color: var(--hover-color)
}

.chapter-item a {
    display: block;
    padding: .75rem 1rem;
    text-decoration: none;
    font-size: .95rem;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden
}

.chapter-item a:visited {
    color: var(--secondary-color);
}

.reader-container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 15px
}

.reader-container .container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0;
    margin-bottom: 1rem
}

.reader-header {
    background-color: var(--card-bg);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem
}

.reader-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--primary-color);
    flex: 1;
    min-width: 200px
}

.reader-controls {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap
}

.control-group {
    display: flex;
    align-items: center;
    gap: .5rem
}

.control-group label {
    font-size: .9rem;
    color: var(--text-light)
}

.control-group input[type=range] {
    width: 100px
}

.reader-settings-btn {
    display: none;
    background-color: transparent;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 1.5rem;
    cursor: pointer;
    transition: all .3s ease
}

.reader-settings-panel {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2000
}

.reader-settings-panel.active {
    display: block
}

.settings-panel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, .5);
    opacity: 0;
    transition: opacity .3s ease
}

.reader-settings-panel.active .settings-panel-overlay {
    opacity: 1
}

.settings-panel-content {
    position: absolute;
    top: 50%;
    margin-top: -10rem;
    left: 1rem;
    right: 1rem;
    background-color: var(--card-bg);
    border-radius: 16px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, .15);
    transform: translateY(100%);
    transition: transform .3s ease;
    z-index: 2147483647
}

.reader-settings-panel.active .settings-panel-content {
    transform: translateY(0)
}

.settings-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color)
}

.settings-panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0
}

.settings-close-btn {
    width: 32px;
    height: 32px;
    border: none;
    background-color: transparent;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color .3s ease
}

.settings-close-btn:hover {
    background-color: var(--hover-color)
}

.settings-panel-body {
    padding: 1.5rem
}

.settings-panel-body .control-group {
    flex-direction: column;
    align-items: flex-start;
    gap: .75rem;
    margin-bottom: 1.5rem
}

.settings-panel-body .control-group:last-child {
    margin-bottom: 0
}

.settings-panel-body .control-group label {
    font-size: 1rem;
    color: var(--text-color);
    font-weight: 500
}

.settings-panel-body .control-group input[type=range] {
    width: 100%
}

.settings-panel-body .control-group span {
    font-size: .9rem;
    color: var(--secondary-color);
    font-weight: 600;
    min-width: 50px;
    text-align: right;
    align-self: flex-end
}

.reader-content {
    background-color: var(--reader-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    line-height: var(--reader-line-height, 2);
    font-size: var(--reader-font-size, 1.2rem);
    color: var(--reader-text);
    transition: all .3s ease
}

.reader-content h1 {
    max-width: 900px;
    margin: 2rem auto 3rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem
}

.reader-content .content {
    max-width: 900px;
    margin: 0 auto
}

.reader-content #chapterTitle {
    text-align: center;
    padding-bottom: 1rem
}

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

.reader-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 2rem;
    margin-bottom: 2rem;
    gap: 1rem
}

.ranking-list {
    list-style: none
}

.ranking-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform .3s ease, box-shadow .3s ease
}

.ranking-number {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    min-width: 50px;
    text-align: center
}

.ranking-number.top3 {
    color: #e74c3c
}

.ranking-info {
    flex: 1
}

.ranking-title a {
    text-decoration: none;
    color: inherit
}

.ranking-title a:hover {
    color: var(--secondary-color)
}

.ranking-meta {
    color: var(--text-light);
    font-size: .9rem
}

.filter-bar {
    background-color: var(--card-bg);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    box-shadow: var(--shadow)
}

.filter-tags {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: .5rem
}

.author-grid {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: .5rem;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
    margin-bottom: 2rem
}

.author-grid a {
    border: 1px solid var(--primary-color)
}

.author-grid a {
    border: 1px solid var(--border-color);
    font-size: .95rem;
    border-radius: 6px;
    padding: .25rem .5rem;
    background-color: var(--card-bg);
    box-sizing: border-box;
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap
}

.author-grid a:hover {
    border-color: var(--secondary-color)
}

@media (min-width:768px) {
    .filter-tags {
        grid-template-columns: repeat(5, 1fr)
    }
}

@media (min-width:960px) {
    .header {
        position: sticky;
        top: 0;
        z-index: 9999
    }

    .nav-search {
        display: block
    }

    .nav-search-input {
        width: 200px
    }

    .nav-search-input:focus {
        width: 250px
    }

    .reader-header {
        position: sticky;
        top: 3px;
        z-index: 10000;
        box-shadow: none
    }
}

@media (min-width:1200px) {
    .nav-menu {
        gap: 2rem
    }

    .nav-search-input {
        width: 250px
    }

    .nav-search-input:focus {
        width: 300px
    }

    .filter-tags {
        grid-template-columns: repeat(10, 1fr)
    }
}

.filter-tag {
    padding: .5rem 1rem;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-color);
    font-size: .9rem;
    transition: all .3s ease;
    text-align: center
}

.filter-tag.active,
.filter-tag:hover {
    background-color: var(--secondary-color);
    color: #fff;
    border-color: var(--secondary-color)
}

.footer {
    background-color: var(--card-bg);
    padding: 2rem 0;
    border-top: 1px solid var(--border-color);
    text-align: center;
    color: var(--text-light);
    font-size: .9rem;
    margin-top: -2rem
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-light)
}

.empty-state-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: .5
}

@media (max-width:768px) {
    html {
        font-size: 16px
    }

    .main-content {
        min-height: calc(100vh - 181px)
    }

    .nav {
        padding: .5rem 0
    }

    .menu-toggle {
        display: flex;
        z-index: 1001
    }

    .nav-left {
        flex: 1;
        justify-content: flex-start
    }

    .logo {
        position: absolute;
        left: 50%;
        transform: translateX(-50%);
        z-index: 1001;
        font-size: 1.25rem;
        overflow: hidden;
        white-space: nowrap;
        text-overflow: ellipsis;
        max-width: calc(100% - 10rem)
    }

    .theme-toggle {
        z-index: 1001
    }

    .nav-left .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 200px;
        max-width: 85vw;
        height: 100vh;
        background-color: var(--card-bg);
        box-shadow: -4px 0 16px rgba(0, 0, 0, .15);
        flex-direction: column;
        align-items: stretch;
        padding: 0;
        gap: 0;
        transition: right .3s cubic-bezier(.4, 0, .2, 1);
        z-index: 1002;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch
    }

    .nav-left .nav-menu.active {
        right: 0
    }

    .nav-menu::before {
        content: '导航菜单';
        display: block;
        padding: .85rem 1.5rem;
        font-size: 1.15rem;
        font-weight: 600;
        color: var(--primary-color);
        background-color: var(--hover-color);
        border-bottom: 1px solid var(--border-color);
        position: sticky;
        top: 0;
        z-index: 1
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid var(--border-color);
        transition: background-color .2s ease
    }

    .nav-menu li:last-child {
        border-bottom: none
    }

    .nav-menu li:hover {
        background-color: var(--hover-color)
    }

    .nav-menu a {
        display: block;
        padding: 1rem 1.5rem;
        width: 100%;
        font-size: 1.05rem;
        transition: all .2s ease;
        position: relative
    }

    .nav-menu a.active {
        color: var(--secondary-color);
        font-weight: 600
    }

    .nav-menu a::after {
        bottom: 0
    }

    .theme-toggle {
        padding: .5rem;
        font-size: 1.5rem;
        min-width: 40px;
        height: 40px;
        border-radius: 4px;
        justify-content: center;
        border: none
    }

    .menu-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, .5);
        backdrop-filter: blur(2px);
        -webkit-backdrop-filter: blur(2px);
        z-index: 1000;
        opacity: 0;
        transition: opacity .3s ease
    }

    .menu-overlay.active {
        display: block;
        opacity: 1
    }

    .book-grid {
        gap: 1rem
    }

    .book-title {
        font-size: 1.1rem
    }

    .book-author {
        font-size: .95rem
    }

    .book-desc {
        font-size: .95rem
    }

    .book-update-time {
        font-size: .95rem
    }

    .book-badge {
        font-size: .85rem
    }

    .book-list-item a {
        flex-direction: column
    }

    .book-list-cover {
        width: 100%;
        height: 200px
    }

    .book-list-title {
        font-size: 1.2rem
    }

    .book-list-desc {
        font-size: 1rem
    }

    .book-list-meta {
        font-size: .95rem
    }

    .update-item,
    .update-list-header {
        grid-template-columns: 2fr 1.2fr 1fr 1fr 1.2fr
    }

    .update-cell,
    .update-header-cell {
        padding: .75rem .5rem;
        font-size: .95rem
    }

    .category-ranking-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem
    }

    .ranking-module-title {
        padding: .75rem 1rem;
        font-size: 1rem
    }

    .ranking-item {
        gap: .625rem
    }

    .ranking-title {
        font-size: .95rem
    }

    .ranking-author {
        font-size: .9rem
    }

    .ranking-item::before {
        width: 18px;
        height: 18px;
        font-size: .75rem
    }

    .ranking-author {
        max-width: 80px
    }

    .detail-header {
        flex-direction: column
    }

    .detail-cover {
        width: 150px;
        height: 200px;
        margin: 0 auto
    }

    .chapter-list {
        grid-template-columns: repeat(2, 1fr)
    }

    .reader-header {
        flex-direction: row;
        align-items: center;
        justify-content: space-between
    }

    .reader-controls {
        display: none
    }

    .reader-settings-btn {
        display: block
    }

    .ranking-number {
        align-self: flex-start
    }

    .reader-nav {
        margin-top: 1rem;
        margin-bottom: 1rem
    }

    .comment-time {
        font-size: .95rem
    }

    .comment-content {
        font-size: 1rem
    }

    .comment-username {
        font-size: 1rem
    }

    .breadcrumb {
        font-size: 1rem
    }
}

@media (max-width:480px) {
    .category-ranking-grid {

        gap: 1rem
    }

    .update-item,
    .update-list-header {
        grid-template-columns: 1fr
    }

    .update-header-cell {
        display: none
    }

    .update-header-cell:first-child {
        display: block;
        font-size: .9rem;
        padding: .75rem;
        border-bottom: 1px solid var(--border-color)
    }

    .update-list-header {
        display: none
    }

    .update-item {
        display: flex;
        flex-direction: column;
        border-bottom: 1px solid var(--border-color);
        padding: 1rem;
        gap: .5rem;
        transition: background-color .2s ease
    }

    .update-item:last-child {
        border-bottom: none
    }

    .update-item:hover {
        background-color: var(--hover-color)
    }

    .update-cell {
        padding: 0;
        font-size: 1rem;
        display: flex;
        align-items: center;
        flex-wrap: wrap;
        gap: .5rem
    }

    .update-cell:first-child {
        order: 1;
        font-weight: 600;
        font-size: 1.05rem;
        margin-bottom: .25rem
    }

    .update-cell:first-child a {
        color: var(--primary-color);
        font-weight: 600
    }

    .update-cell:nth-child(2) {
        order: 2
    }

    .update-cell:nth-child(3) {
        order: 3
    }

    .update-cell:nth-child(4) {
        order: 4
    }

    .update-cell:nth-child(5) {
        order: 5;
        color: var(--text-light);
        font-size: .95rem
    }

    .update-cell::before {
        font-weight: 500;
        color: var(--text-light);
        font-size: .95rem
    }

    .update-cell:first-child::before {
        display: none
    }

    .update-cell:nth-child(2)::before {
        content: '作者：'
    }

    .update-cell:nth-child(3)::before {
        content: '分类：'
    }

    .update-cell:nth-child(4)::before {
        content: '字数：'
    }

    .update-cell:nth-child(5)::before {
        content: '更新：'
    }

    .ranking-item {
        padding: .75rem 1rem;
        gap: .75rem
    }

    .ranking-item::before {
        width: 20px;
        height: 20px;
        font-size: .8rem;
        flex-shrink: 0
    }

    .ranking-title {
        flex: 1;
        min-width: 0
    }

    .ranking-author {
        flex-shrink: 0;
        max-width: 80px;
        text-align: right
    }

    .detail-title {
        font-size: 1.5rem;
        margin-bottom: 1.25rem
    }

    .detail-meta {
        gap: 1rem;
        font-size: 1rem;
        padding: 1rem 1.25rem
    }

    .detail-meta span:not(:last-child)::after {
        display: none
    }

    .detail-actions {
        margin-top: 1.5rem
    }

    .detail-actions .btn {
        width: 100%;
        font-size: .9rem
    }

    .reading-progress {
        flex-wrap: wrap;
        padding: .75rem 1rem;
        font-size: 1rem;
        width: 100%;
        justify-content: flex-start
    }

    .detail-actions .btn {
        width: 100%;
        min-width: auto;
        padding: .5rem 1.5rem;
        font-size: 1rem
    }

    .chapter-list {
        grid-template-columns: 1fr
    }

    .comment-item {
        padding: 1rem
    }

    .comment-header {
        flex-direction: column;
        align-items: flex-start;
        gap: .5rem
    }

    .reader-content {
        padding: 0;
        background-color: transparent;
        box-shadow: none;
        text-align: justify
    }

    .reader-content h1 {
        margin: 1rem auto;
        font-size: 1.25rem
    }

    .reader-title {
        font-size: 1.1rem
    }

    .reader-nav .btn {
        padding: .5rem 1rem;
        flex: 1
    }

    .chapter-item a {
        font-size: 1rem
    }
}

.history-item {
    background-color: var(--card-bg);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: var(--shadow);
    transition: all .3s ease;
    border: 1px solid var(--border-color);
    min-width: 0
}

.history-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, .15);
    transform: translateY(-2px)
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    gap: 1rem
}

.history-book-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary-color);
    margin: 0;
    flex: 1;
    line-height: 1.4;
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden
}

.history-read-time {
    font-size: .875rem;
    color: var(--text-light);
    white-space: nowrap;
    flex-shrink: 0
}

.history-item-content {
    margin-bottom: 1rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color)
}

.history-chapter-info {
    font-size: .95rem;
    display: flex;
    align-items: center;
    gap: .5rem;
    flex-wrap: wrap
}

.history-chapter-label {
    color: var(--text-light);
    white-space: nowrap
}

.history-chapter-title {
    color: var(--text-color);
    text-decoration: none;
    transition: color .3s ease;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0
}

.history-chapter-title:hover {
    color: var(--secondary-color)
}

.history-item-actions {
    display: flex;
    gap: 1rem
}

.btn-sm {
    padding: .5rem 1.5rem;
    font-size: .9rem;
    font-weight: 500;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    border: 1.5px solid var(--border-color);
    background-color: transparent;
    color: var(--text-color);
    transition: all .25s cubic-bezier(.4, 0, .2, 1);
    cursor: pointer;
    box-sizing: border-box
}

.btn-sm:hover {
    border-color: var(--secondary-color);
    color: var(--secondary-color);
    background-color: rgba(52, 152, 219, .05);
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(52, 152, 219, .15)
}

.btn-sm:active {
    transform: translateY(0);
    box-shadow: none
}

@media (max-width:768px) {
    .history-item-actions .btn {
        width: 100%;
        text-align: center
    }
}

.listpage,
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    padding: 1rem 0;
    list-style-type: none
}

.pagination {
    margin-top: 1rem;
    margin-bottom: 1rem
}

.listpage {
    margin-top: -1rem
}

.listpage .middle select,
.listpage a,
.pagination .page-link,
.pagination-btn {
    padding: .5rem 1.5rem;
    border: 1.5px solid var(--border-color);
    border-radius: 8px;
    background-color: transparent;
    color: var(--text-color);
    font-size: .9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all .25s cubic-bezier(.4, 0, .2, 1);
    box-sizing: border-box
}

.listpage a.onclick:hover,
.pagination .page-link:hover:not(:disabled),
.pagination-btn:hover:not(:disabled) {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 2px 8px rgba(52, 152, 219, .15)
}

.listpage a.onclick:hover,
.pagination .page-link:active:not(:disabled),
.pagination-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: none
}

.listpage a.before,
.pagination .page-link:disabled,
.pagination-btn:disabled {
    opacity: .5;
    cursor: not-allowed
}

.pagination-info {
    color: var(--text-color);
    font-size: .9rem;
    text-align: center;
    padding: 0 1rem;
    min-width: 80px
}

.pagination .hidden-xs {
    display: none
}

@media (max-width:768px) {

    .listpage,
    .pagination {
        gap: .75rem
    }

    .listpage .middle select,
    .listpage a,
    .pagination .page-link,
    .pagination-btn {
        padding: .625rem .75rem;
        font-size: .95rem
    }

    .pagination-btn {
        padding: .5rem 1rem
    }

    .listpage .middle {
        flex: 1
    }

    .listpage .middle select,
    .listpage a,
    .pagination .page-link,
    .pagination-info {
        font-size: .95rem
    }

    .listpage .middle select {
        width: 100%
    }

    .pagination-info {
        padding: 0 .5rem;
        min-width: 60px
    }
}