/*
Theme Name: ZiLiao
Theme URI: https://example.com/ziliao
Description: 资源下载类CMS主题，支持自定义板块、多展示模式、星级评分、下载系统
Author: ZiLiao Team
Version: 1.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
*/

/* ========== CSS Variables ========== */
:root {
    --primary: #1e90ff;
    --primary-dark: #0066cc;
    --primary-light: #e8f4ff;
    --bg: #f5f7fa;
    --bg-white: #ffffff;
    --text: #333333;
    --text-light: #666666;
    --text-muted: #999999;
    --border: #e8e8e8;
    --shadow: 0 2px 8px rgba(0,0,0,0.08);
    --shadow-hover: 0 4px 16px rgba(0,0,0,0.12);
    --radius: 8px;
    --radius-sm: 4px;
    --header-height: 60px;
    --sidebar-width: 320px;
    --container-width: 1200px;
    --transition: all 0.3s ease;
}

/* ========== Reset & Base ========== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    font-size: 14px;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    min-height: 100vh;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

img { max-width: 100%; height: auto; display: block; }

ul, ol { list-style: none; }

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 15px;
}

/* ========== Header ========== */
.site-header {
    background: var(--bg-white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    height: var(--header-height);
    gap: 20px;
}

.site-logo {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.site-logo img {
    height: 40px;
    width: auto;
}

.site-logo .logo-text {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
}

.site-logo .logo-text span {
    color: var(--primary);
}

/* Main Navigation */
.main-nav {
    flex: 1;
}

.main-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 0;
}

.main-nav .nav-item {
    position: relative;
}

.main-nav .nav-item > a {
    display: block;
    padding: 0 16px;
    line-height: var(--header-height);
    color: var(--text);
    font-size: 15px;
    white-space: nowrap;
    transition: var(--transition);
}

.main-nav .nav-item > a:hover,
.main-nav .nav-item.active > a {
    color: var(--primary);
    background: var(--primary-light);
}

/* Dropdown submenu */
.main-nav .nav-item .sub-nav {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 180px;
    background: var(--bg-white);
    box-shadow: var(--shadow-hover);
    border-radius: 0 0 var(--radius) var(--radius);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-5px);
    transition: var(--transition);
    z-index: 100;
}

.main-nav .nav-item:hover .sub-nav {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.main-nav .sub-nav a {
    display: block;
    padding: 10px 20px;
    color: var(--text);
    font-size: 14px;
    border-bottom: 1px solid var(--border);
}

.main-nav .sub-nav a:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.main-nav .sub-nav a:last-child {
    border-bottom: none;
}

/* Header Search */
.header-search {
    flex-shrink: 0;
    position: relative;
}

.header-search form {
    display: flex;
    align-items: center;
}

.header-search input[type="text"] {
    width: 200px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 13px;
    outline: none;
    transition: var(--transition);
}

.header-search input[type="text"]:focus {
    border-color: var(--primary);
    width: 260px;
}

.header-search button {
    height: 36px;
    padding: 0 16px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    cursor: pointer;
    font-size: 14px;
    transition: var(--transition);
}

.header-search button:hover {
    background: var(--primary-dark);
}

/* Mobile menu toggle */
.menu-toggle {
    display: none;
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 4px;
}

.menu-toggle span {
    display: block;
    width: 18px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

/* ========== Recommend Area ========== */
.recommend-area {
    background: var(--bg-white);
    margin-top: 15px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}

.recommend-area .section-title {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 15px;
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
}

.recommend-area .section-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 20px;
    background: var(--primary);
    border-radius: 2px;
}

.recommend-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 15px;
}

.recommend-card {
    display: flex;
    gap: 12px;
    padding: 12px;
    background: var(--bg);
    border-radius: var(--radius);
    transition: var(--transition);
}

.recommend-card:hover {
    background: var(--primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.recommend-card .card-cover {
    width: 100px;
    height: 75px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.recommend-card .card-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.recommend-card .card-info {
    flex: 1;
    min-width: 0;
}

.recommend-card .card-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 6px;
}

.recommend-card .card-title a { color: var(--text); }
.recommend-card .card-title a:hover { color: var(--primary); }

.recommend-card .card-meta {
    font-size: 12px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 10px;
}

.recommend-card .star-rating {
    color: #ff9900;
    font-size: 12px;
}

.recommend-card .tag-recommend {
    display: inline-block;
    padding: 1px 6px;
    background: #ff6600;
    color: #fff;
    font-size: 11px;
    border-radius: 2px;
}

/* ========== Latest Content Tabs ========== */
.latest-tabs {
    background: var(--bg-white);
    margin-top: 15px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.tabs-header {
    display: flex;
    align-items: center;
    border-bottom: 1px solid var(--border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tabs-header .tab-item {
    padding: 14px 24px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-light);
    cursor: pointer;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    transition: var(--transition);
}

.tabs-header .tab-item:hover {
    color: var(--primary);
    background: var(--primary-light);
}

.tabs-header .tab-item.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content {
    padding: 15px;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
}

.latest-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 12px;
}

.latest-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.latest-item:hover {
    background: var(--bg);
}

.latest-item .item-index {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    border-radius: var(--radius-sm);
}

.latest-item:nth-child(-n+3) .item-index {
    background: var(--primary);
    color: #fff;
}

.latest-item .item-title {
    flex: 1;
    min-width: 0;
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.latest-item .item-title a { color: var(--text); }
.latest-item .item-title a:hover { color: var(--primary); }

.latest-item .item-date {
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* ========== Main Layout ========== */
.main-layout {
    display: flex;
    gap: 20px;
    margin-top: 15px;
}

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

.sidebar {
    width: var(--sidebar-width);
    flex-shrink: 0;
}

/* ========== Block Section (Customizable) ========== */
.block-section {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    overflow: hidden;
}

.block-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
}

.block-header .block-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.block-header .block-title::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 18px;
    background: var(--primary);
    border-radius: 2px;
}

.block-header .block-more {
    font-size: 13px;
    color: var(--text-muted);
}

.block-header .block-more:hover {
    color: var(--primary);
}

.block-body {
    padding: 15px 20px;
}

/* Mode: Left Image, Right Text */
.block-mode-left .block-list .block-item {
    display: flex;
    gap: 15px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.block-mode-left .block-list .block-item:last-child {
    border-bottom: none;
}

.block-mode-left .block-item .item-cover {
    width: 160px;
    height: 100px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.block-mode-left .block-item .item-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.block-mode-left .block-item:hover .item-cover img {
    transform: scale(1.05);
}

.block-mode-left .block-item .item-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.block-mode-left .block-item .item-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.block-mode-left .block-item .item-title a { color: var(--text); }
.block-mode-left .block-item .item-title a:hover { color: var(--primary); }

.block-mode-left .block-item .item-desc {
    font-size: 13px;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin: 6px 0;
}

.block-mode-left .block-item .item-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 12px;
    color: var(--text-muted);
}

.block-mode-left .block-item .item-meta .star-rating {
    color: #ff9900;
}

.block-mode-left .block-item .item-meta .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 12px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 12px;
}

.block-mode-left .block-item .item-meta .btn-download:hover {
    background: var(--primary-dark);
    color: #fff;
}

/* Mode: Right Image, Left Text */
.block-mode-right .block-list .block-item {
    display: flex;
    gap: 15px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
}

.block-mode-right .block-list .block-item:last-child {
    border-bottom: none;
}

.block-mode-right .block-item .item-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.block-mode-right .block-item .item-cover {
    width: 160px;
    height: 100px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
    order: 2;
}

.block-mode-right .block-item .item-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.block-mode-right .block-item:hover .item-cover img {
    transform: scale(1.05);
}

.block-mode-right .block-item .item-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.block-mode-right .block-item .item-title a { color: var(--text); }
.block-mode-right .block-item .item-title a:hover { color: var(--primary); }

.block-mode-right .block-item .item-desc {
    font-size: 13px;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin: 6px 0;
}

.block-mode-right .block-item .item-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 12px;
    color: var(--text-muted);
}

.block-mode-right .block-item .item-meta .star-rating {
    color: #ff9900;
}

.block-mode-right .block-item .item-meta .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 12px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-sm);
    font-size: 12px;
}

.block-mode-right .block-item .item-meta .btn-download:hover {
    background: var(--primary-dark);
    color: #fff;
}

/* Mode: Double Column Plain Text */
.block-mode-plain .block-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
}

.block-mode-plain .block-list .block-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

.block-mode-plain .block-list .block-item:hover {
    background: var(--bg);
}

.block-mode-plain .block-item .item-index {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    border-radius: var(--radius-sm);
}

.block-mode-plain .block-item:nth-child(-n+3) .item-index {
    background: var(--primary);
    color: #fff;
}

.block-mode-plain .block-item .item-title {
    flex: 1;
    min-width: 0;
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.block-mode-plain .block-item .item-title a { color: var(--text); }
.block-mode-plain .block-item .item-title a:hover { color: var(--primary); }

.block-mode-plain .block-item .item-date {
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Mode: Pure Image Grid (Gallery) */
.block-mode-gallery .block-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 12px;
}

.block-mode-gallery .block-list .block-item {
    position: relative;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.block-mode-gallery .block-item .item-cover {
    width: 100%;
    height: 100%;
}

.block-mode-gallery .block-item .item-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.block-mode-gallery .block-item:hover .item-cover img {
    transform: scale(1.08);
}

.block-mode-gallery .block-item .item-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 10px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: #fff;
    transform: translateY(100%);
    transition: var(--transition);
}

.block-mode-gallery .block-item:hover .item-overlay {
    transform: translateY(0);
}

.block-mode-gallery .block-item .item-overlay .item-title {
    font-size: 13px;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.block-mode-gallery .block-item .item-overlay .item-title a {
    color: #fff;
}

.block-mode-gallery .block-item .item-overlay .item-meta {
    font-size: 11px;
    opacity: 0.8;
    margin-top: 4px;
}

/* ========== Sidebar ========== */
.sidebar-widget {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 20px;
    overflow: hidden;
}

.widget-header {
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.widget-header::before {
    content: '';
    display: inline-block;
    width: 4px;
    height: 16px;
    background: var(--primary);
    border-radius: 2px;
}

.widget-body {
    padding: 12px 18px;
}

/* Rank Widget */
.rank-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 10px;
    border-bottom: 1px solid var(--border);
}

.rank-tab {
    padding: 8px 16px;
    font-size: 13px;
    color: var(--text-light);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
}

.rank-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.rank-list .rank-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.rank-list .rank-item:last-child {
    border-bottom: none;
}

.rank-item .rank-num {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    border-radius: var(--radius-sm);
}

.rank-item:nth-child(-n+3) .rank-num {
    background: var(--primary);
    color: #fff;
}

.rank-item .rank-title {
    flex: 1;
    min-width: 0;
    font-size: 13px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.rank-item .rank-title a { color: var(--text); }
.rank-item .rank-title a:hover { color: var(--primary); }

.rank-item .rank-count {
    font-size: 12px;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Category Widget */
.cat-list .cat-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
}

.cat-list .cat-item:last-child {
    border-bottom: none;
}

.cat-item .cat-name a {
    color: var(--text);
    font-size: 14px;
}

.cat-item .cat-name a:hover {
    color: var(--primary);
}

.cat-item .cat-count {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--bg);
    padding: 2px 8px;
    border-radius: 10px;
}

/* Tag Widget */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 5px 0;
}

.tag-cloud a {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg);
    color: var(--text-light);
    font-size: 12px;
    border-radius: 15px;
    transition: var(--transition);
}

.tag-cloud a:hover {
    background: var(--primary);
    color: #fff;
}

/* Ad Widget */
.ad-widget {
    padding: 0;
}

.ad-widget img {
    width: 100%;
    border-radius: var(--radius-sm);
}

.ad-widget .ad-text {
    padding: 15px;
    text-align: center;
    color: var(--text-light);
    font-size: 13px;
}

/* ========== Pagination ========== */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    padding: 20px 0;
}

.pagination a, .pagination span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text);
    transition: var(--transition);
}

.pagination a:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.pagination .current {
    background: var(--primary);
    border-color: var(--primary);
    color: #fff;
}

/* ========== Article Detail (echo_log.php) ========== */
.article-detail {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.article-header {
    padding: 25px 30px;
    border-bottom: 1px solid var(--border);
}

.article-header .article-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.4;
    margin-bottom: 12px;
}

.article-meta {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    font-size: 13px;
    color: var(--text-muted);
}

.article-meta .meta-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.article-meta .star-rating {
    color: #ff9900;
    font-size: 16px;
}

.article-meta .tag-recommend {
    display: inline-block;
    padding: 2px 8px;
    background: #ff6600;
    color: #fff;
    font-size: 12px;
    border-radius: 2px;
}

.article-content {
    padding: 25px 30px;
    font-size: 15px;
    line-height: 1.8;
    color: var(--text);
}

.article-content p { margin-bottom: 15px; }
.article-content h2 { font-size: 20px; margin: 25px 0 15px; }
.article-content h3 { font-size: 17px; margin: 20px 0 12px; }
.article-content img { max-width: 100%; border-radius: var(--radius-sm); margin: 15px 0; }
.article-content blockquote {
    margin: 15px 0;
    padding: 15px 20px;
    background: var(--bg);
    border-left: 4px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    color: var(--text-light);
}
.article-content pre {
    margin: 15px 0;
    padding: 15px;
    background: #2d2d2d;
    color: #f8f8f2;
    border-radius: var(--radius);
    overflow-x: auto;
    font-size: 13px;
}
.article-content code {
    background: var(--bg);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 13px;
}
.article-content pre code {
    background: none;
    padding: 0;
}

/* Download Box */
.download-box {
    margin: 25px 30px;
    padding: 20px;
    background: var(--primary-light);
    border: 1px solid var(--primary);
    border-radius: var(--radius);
}

.download-box .box-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.download-box .box-info {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
    font-size: 13px;
    color: var(--text-light);
}

.download-box .box-info .info-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.download-box .box-info .info-label {
    color: var(--text-muted);
}

.download-box .box-info .info-value {
    color: var(--text);
    font-weight: 600;
}

.download-box .btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.download-box .btn-download {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 24px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius);
    font-size: 15px;
    font-weight: 600;
    transition: var(--transition);
}

.download-box .btn-download:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.download-box .download-pwd {
    margin-top: 12px;
    padding: 10px 15px;
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #856404;
}

/* Article Tags */
.article-tags {
    padding: 15px 30px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.article-tags .tag-label {
    font-size: 13px;
    color: var(--text-muted);
}

.article-tags a {
    display: inline-block;
    padding: 3px 10px;
    background: var(--bg);
    color: var(--text-light);
    font-size: 12px;
    border-radius: 15px;
    transition: var(--transition);
}

.article-tags a:hover {
    background: var(--primary);
    color: #fff;
}

/* Related Articles */
.related-articles {
    padding: 20px 30px;
    border-top: 1px solid var(--border);
}

.related-articles .section-title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--text);
}

.related-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 12px;
}

.related-item {
    display: flex;
    gap: 10px;
    padding: 10px;
    background: var(--bg);
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.related-item:hover {
    background: var(--primary-light);
}

.related-item .item-cover {
    width: 80px;
    height: 60px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.related-item .item-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.related-item .item-title {
    flex: 1;
    font-size: 13px;
    display: flex;
    align-items: center;
}

.related-item .item-title a { color: var(--text); }
.related-item .item-title a:hover { color: var(--primary); }

/* Comments */
.article-comments {
    padding: 20px 30px;
    border-top: 1px solid var(--border);
}

/* ========== 404 Page ========== */
.page-404 {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    text-align: center;
    padding: 40px 20px;
}

.page-404 .error-code {
    font-size: 120px;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    margin-bottom: 15px;
}

.page-404 .error-msg {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 25px;
}

.page-404 .btn-home {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 12px 30px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius);
    font-size: 15px;
    transition: var(--transition);
}

.page-404 .btn-home:hover {
    background: var(--primary-dark);
    color: #fff;
    transform: translateY(-2px);
}

/* ========== Password Page ========== */
.pw-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 300px;
    padding: 40px 20px;
}

.pw-page .pw-icon {
    font-size: 48px;
    margin-bottom: 20px;
}

.pw-page .pw-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 15px;
}

.pw-form {
    display: flex;
    gap: 0;
}

.pw-form input[type="password"] {
    width: 260px;
    height: 40px;
    padding: 0 15px;
    border: 1px solid var(--border);
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 14px;
    outline: none;
}

.pw-form input[type="password"]:focus {
    border-color: var(--primary);
}

.pw-form button {
    height: 40px;
    padding: 0 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: 0 var(--radius) var(--radius) 0;
    cursor: pointer;
    font-size: 14px;
}

.pw-form button:hover {
    background: var(--primary-dark);
}

/* ========== Footer ========== */
.site-footer {
    background: #2c3e50;
    color: #bdc3c7;
    margin-top: 30px;
    padding-top: 25px;
}

.footer-inner {
    display: flex;
    gap: 30px;
    padding-bottom: 20px;
}

.footer-col {
    flex: 1;
}

.footer-col .col-title {
    font-size: 16px;
    font-weight: 700;
    color: #ecf0f1;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary);
    display: inline-block;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.footer-links a {
    color: #bdc3c7;
    font-size: 13px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary);
}

.footer-bottom {
    text-align: center;
    padding: 15px 0;
    border-top: 1px solid #34495e;
    font-size: 13px;
    color: #95a5a6;
}

/* ========== Search Results ========== */
.search-header {
    background: var(--bg-white);
    padding: 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    margin-bottom: 15px;
}

.search-header .search-keyword {
    font-size: 18px;
    font-weight: 600;
    color: var(--text);
}

.search-header .search-keyword span {
    color: var(--primary);
}

.search-header .search-count {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 5px;
}

/* ========== Page Template ========== */
.page-content {
    background: var(--bg-white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 30px;
}

.page-content .page-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .main-layout {
        flex-direction: column;
    }
    .sidebar {
        width: 100%;
    }
    .block-mode-plain .block-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 50px;
    }

    .menu-toggle {
        display: flex;
    }

    .main-nav {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--bg-white);
        box-shadow: var(--shadow);
        z-index: 999;
    }

    .main-nav.open {
        display: block;
    }

    .main-nav .nav-list {
        flex-direction: column;
    }

    .main-nav .nav-item > a {
        line-height: 44px;
        padding: 0 20px;
        border-bottom: 1px solid var(--border);
    }

    .main-nav .nav-item .sub-nav {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        display: none;
    }

    .main-nav .nav-item .sub-nav a {
        padding-left: 40px;
    }

    .header-search input[type="text"] {
        width: 120px;
    }

    .header-search input[type="text"]:focus {
        width: 160px;
    }

    .recommend-list {
        grid-template-columns: 1fr;
    }

    .latest-list {
        grid-template-columns: 1fr;
    }

    .block-mode-left .block-item .item-cover,
    .block-mode-right .block-item .item-cover {
        width: 120px;
        height: 80px;
    }

    .article-header {
        padding: 20px;
    }

    .article-header .article-title {
        font-size: 20px;
    }

    .article-content {
        padding: 20px;
    }

    .download-box {
        margin: 20px;
    }

    .article-tags {
        padding: 15px 20px;
    }

    .related-articles {
        padding: 20px;
    }

    .footer-inner {
        flex-direction: column;
        gap: 20px;
    }

    .block-mode-gallery .block-list {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }

    .header-search input[type="text"] {
        width: 100px;
    }

    .recommend-card .card-cover {
        width: 80px;
        height: 60px;
    }

    .block-mode-left .block-item,
    .block-mode-right .block-item {
        flex-direction: column;
    }

    .block-mode-left .block-item .item-cover,
    .block-mode-right .block-item .item-cover {
        width: 100%;
        height: 160px;
        order: 0;
    }

    .download-box .box-info {
        grid-template-columns: 1fr;
    }
}

/* ========== Utility Classes ========== */
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }
.mt-10 { margin-top: 10px; }
.mt-15 { margin-top: 15px; }
.mt-20 { margin-top: 20px; }
.mb-10 { margin-bottom: 10px; }
.mb-15 { margin-bottom: 15px; }
.mb-20 { margin-bottom: 20px; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.clearfix::after { content: ''; display: table; clear: both; }
.hidden { display: none !important; }

/* Loading animation */
.loading {
    display: flex;
    justify-content: center;
    padding: 30px;
}

.loading .spinner {
    width: 30px;
    height: 30px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Scrollbar */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: #ccc; border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #aaa; }

/* ========== Code Block with Copy Button ========== */
.article-content pre {
    position: relative;
    background: #1e1e2e;
    color: #cdd6f4;
    border-radius: 8px;
    padding: 0;
    margin: 16px 0;
    overflow: hidden;
}
.article-content pre code {
    display: block;
    padding: 16px 20px;
    overflow-x: auto;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    background: transparent;
    color: inherit;
}
.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    background: #181825;
    border-bottom: 1px solid #313244;
    font-size: 12px;
    color: #6c7086;
}
.code-header .code-lang {
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.btn-copy {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    background: #313244;
    color: #cdd6f4;
    border: none;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-copy:hover {
    background: #45475a;
}
.btn-copy.copied {
    background: #a6e3a1;
    color: #1e1e2e;
}
/* Inline code */
.article-content code:not(pre code) {
    background: #f0f0f5;
    color: #e64553;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.9em;
}

/* ========== In-Article Ad ========== */
.in-article-ad {
    margin: 20px 0;
    padding: 15px;
    background: #f8f9fa;
    border: 1px solid #eee;
    border-radius: 8px;
    text-align: center;
}