/* 站长资讯两栏 / caogen_blog — 原创实现，无站外资源 */
:root {
    --cb-red: #c00;
    --cb-red-dark: #b20001;
    --cb-text: #333;
    --cb-sub: #666;
    --cb-muted: #999;
    --cb-line: #e8e8e8;
    --cb-soft: #f6f6f6;
    --cb-cream: #fefcf4;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
    background: #fff;
    color: var(--cb-text);
    font: 14px/1.7 "Microsoft YaHei", "PingFang SC", "Hiragino Sans GB", Arial, sans-serif;
    -webkit-text-size-adjust: 100%;
}
a { color: var(--cb-text); text-decoration: none; }
a:hover { color: var(--cb-red); text-decoration: none; }
img { border: 0; max-width: 100%; height: auto; }
h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: bold; }
ul, ol { margin: 0; padding: 0; list-style: none; }
p { margin: 0; }
button, input, textarea, select { font-family: inherit; font-size: 14px; }
button { cursor: pointer; }

/* 顶部深色条 */
.cb-topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 38px;
    background: #333;
    color: #ddd;
    z-index: 120;
}
.cb-topbar-inner {
    max-width: 1380px;
    height: 38px;
    margin: 0 auto;
    padding: 0 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}
.cb-topbar-brand { color: #fff; font-size: 16px; font-weight: bold; }
.cb-topbar-brand:hover { color: #f66; }
.cb-topbar-slogan { color: #aaa; font-size: 12px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.cb-topbar-links { margin-left: auto; }
.cb-topbar-links ul { display: flex; gap: 16px; }
.cb-topbar-links a { color: #ddd; font-size: 12px; }
.cb-topbar-links a:hover { color: #fff; }
.cb-menu-toggle {
    display: none;
    margin-left: auto;
    border: 1px solid #666;
    background: transparent;
    color: #fff;
    padding: 4px 10px;
    font-size: 12px;
}
.cb-mobile-menu { display: none; position: absolute; top: 38px; left: 0; right: 0; background: #2a2a2a; padding: 6px 0; }
.cb-mobile-menu.is-open { display: block; }
.cb-mobile-menu li a { display: block; padding: 8px 20px; color: #eee; border-bottom: 1px solid #444; }

/* 左侧固定频道栏 */
.cb-rail {
    position: fixed;
    top: 38px;
    bottom: 0;
    left: 0;
    width: 190px;
    background: var(--cb-soft);
    border-right: 1px solid #e5e5e5;
    overflow-y: auto;
    z-index: 90;
}
.cb-brand { padding: 20px 16px 18px; border-bottom: 1px solid #e5e5e5; }
.cb-brand a { display: block; }
.cb-brand-text { color: var(--cb-red); font-size: 22px; font-weight: bold; letter-spacing: 1px; line-height: 1.3; }
.cb-brand-logo { display: block; max-width: 100%; }
.cb-rail-nav ul { border-bottom: 1px solid #e9e9e9; }
.cb-rail-nav li a {
    display: block;
    padding: 11px 22px;
    color: #555;
    font-size: 15px;
    border-bottom: 1px solid #eee;
}
.cb-rail-nav li a:hover, .cb-rail-nav li[id^="navbar-"] a:hover { background: #fff; color: var(--cb-red); padding-left: 26px; }
.cb-rail-block h2 {
    padding: 12px 22px 8px;
    font-size: 14px;
    color: #444;
    border-top: 1px solid #e5e5e5;
}
.cb-rail-block ul { padding-bottom: 8px; }
.cb-rail-block li a { display: block; padding: 5px 22px; color: #666; font-size: 13px; }
.cb-rail-block li a:hover { color: var(--cb-red); }
.cb-rail-search { padding: 12px 14px 24px; border-top: 1px solid #e5e5e5; }
.cb-rail-search label { display: block; font-size: 12px; color: #888; margin-bottom: 6px; }
.cb-rail-search input[type="search"] {
    width: 100%;
    height: 30px;
    padding: 0 8px;
    border: 1px solid #ccc;
    background: #fff;
}
.cb-rail-search button {
    width: 100%;
    margin-top: 8px;
    height: 30px;
    border: 0;
    background: var(--cb-red);
    color: #fff;
}

/* 主布局 */
.cb-layout {
    max-width: 1380px;
    margin: 0 auto;
    margin-left: 210px;
    padding: 54px 20px 30px 16px;
    display: flex;
    align-items: flex-start;
    gap: 18px;
}
.cb-main { flex: 1 1 auto; min-width: 0; }
.cb-side { flex: 0 0 290px; width: 290px; }
.cb-layout-wide .cb-main { max-width: 860px; margin: 0 auto; }

/* 公告 */
.cb-notice {
    border: 1px dashed #b9ab9e;
    background: var(--cb-cream);
    padding: 8px 12px;
    margin-bottom: 14px;
    font-size: 13px;
    line-height: 2;
    color: #5a5048;
}
.cb-notice strong {
    display: inline-block;
    background: var(--cb-red);
    color: #fff;
    padding: 0 8px;
    margin-right: 10px;
    font-size: 12px;
    font-weight: normal;
}

/* 页面标题 */
.cb-page-head { padding: 4px 4px 14px; border-bottom: 2px solid var(--cb-red); margin-bottom: 10px; }
.cb-page-head h1 { font-size: 24px; line-height: 1.4; }
.cb-page-head p { color: var(--cb-muted); font-size: 13px; margin-top: 6px; }
.cb-feed-title {
    font-size: 16px;
    padding: 8px 0 10px;
    color: #444;
    border-bottom: 1px solid #ddd;
}
.cb-empty { padding: 30px 6px; color: var(--cb-muted); }

/* 标准资讯流 */
.cb-post { padding: 15px 4px 17px; border-bottom: 1px dashed #e3e3e3; }
.cb-post-title { font-size: 20px; line-height: 1.45; font-weight: bold; }
.cb-post-title a:hover { color: var(--cb-red); }
.cb-post-badge {
    display: inline-block;
    background: var(--cb-red);
    color: #fff;
    font-size: 13px;
    font-weight: normal;
    padding: 2px 7px;
    margin-right: 10px;
    vertical-align: 2px;
}
.cb-post-intro { margin-top: 9px; color: var(--cb-sub); font-size: 14px; line-height: 1.85; }
.cb-post-meta { margin-top: 10px; color: var(--cb-muted); font-size: 12px; line-height: 1.8; }
.cb-post-meta a { color: var(--cb-muted); }
.cb-post-meta a:hover { color: var(--cb-red); }
.cb-sep { color: #ccc; margin: 0 5px; }
.cb-tag { margin-right: 6px; }

/* 相关推荐 */
.cb-related {
    background: #fafafa;
    border: 1px solid #eee;
    padding: 10px 14px;
    margin: 12px 0;
}
.cb-related h2 { font-size: 14px; color: #666; margin-bottom: 6px; }
.cb-related-list li { display: inline-block; margin: 2px 14px 2px 0; font-size: 13px; }
.cb-related-list a { color: #555; }
.cb-related-list a:hover { color: var(--cb-red); }

/* 频道 Tab */
.cb-tabs { border: 1px solid #eee; margin: 14px 0 18px; }
.cb-tabs-head { display: flex; flex-wrap: wrap; border-bottom: 2px solid var(--cb-red); background: #fafafa; }
.cb-tab-btn {
    border: 0;
    background: transparent;
    color: #555;
    padding: 9px 18px;
    font-size: 15px;
    border-right: 1px solid #eee;
}
.cb-tab-btn:hover { color: var(--cb-red); }
.cb-tab-btn.is-active { background: var(--cb-red); color: #fff; }
.cb-tab-panel { padding: 6px 14px 12px; }
.cb-tab-panel.is-hidden { display: none; }
.cb-tab-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 2px;
    border-bottom: 1px dotted #e5e5e5;
    font-size: 14px;
}
.cb-tab-list li a { flex: 1 1 auto; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.cb-tab-list time, .cb-tab-views { color: var(--cb-muted); font-size: 12px; flex: 0 0 auto; }

/* 分页 */
.cb-pagebar { margin: 20px 0; }
.cb-pagebar ul { display: flex; flex-wrap: wrap; gap: 5px; }
.cb-pagebar a, .cb-pagebar-current {
    display: inline-block;
    min-width: 30px;
    padding: 5px 9px;
    text-align: center;
    border: 1px solid #ddd;
    color: #555;
    background: #fff;
    font-size: 13px;
}
.cb-pagebar a:hover { border-color: var(--cb-red); color: var(--cb-red); }
.cb-pagebar-current { background: var(--cb-red); border-color: var(--cb-red); color: #fff; }

/* 右侧模块栏 */
.cb-module { margin: 0 0 16px; background: #fff; }
.cb-module-title {
    background: var(--cb-soft);
    border-left: 3px solid var(--cb-red);
    padding: 8px 12px;
    font-size: 16px;
    color: #333;
}
.cb-module-title-hidden { display: none; }
.cb-module-body { padding: 10px 12px; border: 1px solid #eee; border-top: 0; color: #555; }
.cb-module-body ul li { padding: 5px 0; border-bottom: 1px dotted #e5e5e5; font-size: 13px; }
.cb-module-body ul li:last-child { border-bottom: 0; }
.cb-module-body a { color: #555; }
.cb-module-body a:hover { color: var(--cb-red); }
.cb-module-body img { max-width: 100%; }
.cb-module-body form { display: flex; gap: 4px; }
.cb-module-body input[type="text"], .cb-module-body input[type="search"] { min-width: 0; flex: 1 1 auto; border: 1px solid #ccc; padding: 4px 6px; }
.cb-module-body input[type="submit"], .cb-module-body button { border: 0; background: var(--cb-red); color: #fff; padding: 4px 10px; }
.cb-side-hot h2 { background: var(--cb-soft); border-left: 3px solid var(--cb-red); padding: 8px 12px; font-size: 16px; }
.cb-side-hot ul { border: 1px solid #eee; border-top: 0; padding: 8px 12px; }
.cb-side-hot li { display: flex; gap: 8px; padding: 6px 0; border-bottom: 1px dotted #e5e5e5; font-size: 13px; }
.cb-side-hot li:last-child { border-bottom: 0; }
.cb-side-hot li::before { content: ""; flex: 0 0 5px; height: 5px; margin-top: 8px; background: var(--cb-red); }
.cb-side-hot li a { flex: 1 1 auto; }
.cb-hot-views { color: var(--cb-muted); font-size: 12px; }

/* 文章页 */
.cb-crumb { color: var(--cb-muted); font-size: 12px; padding: 2px 4px 14px; }
.cb-crumb a { color: var(--cb-muted); }
.cb-crumb a:hover { color: var(--cb-red); }
.cb-article { padding: 6px 4px 10px; }
.cb-article-head { border-bottom: 1px solid #ddd; padding-bottom: 14px; margin-bottom: 18px; }
.cb-article-head h1 { font-size: 26px; line-height: 1.4; }
.cb-article-meta { color: var(--cb-muted); font-size: 12px; margin-top: 12px; }
.cb-article-meta a { color: var(--cb-muted); }
.cb-article-meta a:hover { color: var(--cb-red); }
.cb-article-content { font-size: 16px; line-height: 1.9; overflow: hidden; word-wrap: break-word; }
.cb-article-content p { margin: 0 0 16px; }
.cb-article-content h2 { font-size: 21px; margin: 24px 0 12px; }
.cb-article-content h3 { font-size: 18px; margin: 20px 0 10px; }
.cb-article-content a { color: var(--cb-red); text-decoration: underline; }
.cb-article-content ul, .cb-article-content ol { margin: 0 0 16px 24px; }
.cb-article-content ul { list-style: disc; }
.cb-article-content ol { list-style: decimal; }
.cb-article-content blockquote { background: #fafafa; border-left: 3px solid var(--cb-red); margin: 0 0 16px; padding: 10px 16px; color: #555; }
.cb-article-content pre { background: #f7f7f7; border: 1px solid #eee; padding: 12px; overflow-x: auto; font-size: 13px; }
.cb-article-content table { border-collapse: collapse; max-width: 100%; }
.cb-article-content td, .cb-article-content th { border: 1px solid #ddd; padding: 6px 10px; }
.cb-article-foot { margin-top: 24px; padding-top: 14px; border-top: 1px dashed #ddd; color: var(--cb-muted); font-size: 12px; }
.cb-article-tags { margin-bottom: 8px; }
.cb-article-tags a { margin-right: 8px; color: var(--cb-red); }
.cb-article-url a { color: var(--cb-muted); }
.cb-prevnext { display: flex; flex-direction: column; gap: 8px; padding: 12px 4px 18px; }
.cb-prevnext a { color: #555; font-size: 14px; }
.cb-prevnext a:hover { color: var(--cb-red); }
.cb-related-posts { border: 1px solid #eee; padding: 12px 16px; margin-bottom: 18px; }
.cb-related-posts h2 { font-size: 15px; margin-bottom: 8px; }
.cb-related-posts li { padding: 4px 0; font-size: 13px; }

/* 评论 */
.cb-comments { padding: 10px 4px 20px; }
.cb-comments-title { font-size: 18px; border-bottom: 2px solid var(--cb-red); padding-bottom: 8px; margin-bottom: 12px; }
.cb-comment-list > li { border-bottom: 1px dashed #ddd; padding: 12px 0; }
.cb-comment-meta { color: var(--cb-muted); font-size: 12px; display: flex; gap: 12px; }
.cb-comment-meta strong { color: #444; font-size: 14px; }
.cb-comment-body { padding: 8px 0 0; line-height: 1.8; }
.cb-comment-children { margin: 10px 0 0 24px; padding: 0 0 0 12px; border-left: 2px solid #eee; }
.cb-comment-children > li { padding: 8px 0; border-top: 1px dotted #eee; }
.cb-comment-form { border: 1px solid #eee; background: #fafafa; padding: 14px; margin-top: 16px; }
.cb-comment-form p { margin-bottom: 10px; }
.cb-comment-form label { display: inline-block; min-width: 80px; color: #666; }
.cb-comment-form input[type="text"], .cb-comment-form textarea { border: 1px solid #ccc; padding: 5px 8px; max-width: 100%; }
.cb-comment-form textarea { display: block; width: 100%; margin-top: 8px; }
.cb-comment-form button { border: 0; background: var(--cb-red); color: #fff; padding: 7px 24px; }
.cb-verify-img { vertical-align: middle; margin-left: 8px; }

/* 列表版式：双列卡片 */
.cb-card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; padding: 14px 0; }
.cb-card { border: 1px solid #eee; background: #fff; overflow: hidden; }
.cb-card:hover { border-color: #d8b3b3; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06); }
.cb-card-thumb { display: block; height: 150px; background: #f2f2f2; overflow: hidden; }
.cb-card-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cb-card-placeholder { display: flex; align-items: center; justify-content: center; height: 100%; color: #aaa; font-size: 15px; }
.cb-card-title { font-size: 17px; padding: 10px 12px 4px; line-height: 1.5; }
.cb-card-intro { color: var(--cb-sub); font-size: 13px; padding: 0 12px; height: 46px; overflow: hidden; }
.cb-card-meta { display: flex; gap: 12px; color: var(--cb-muted); font-size: 12px; padding: 10px 12px 12px; }
.cb-card-meta a { margin-left: auto; color: var(--cb-red); }

/* 列表版式：左图右文 */
.cb-media-list { padding: 8px 0; }
.cb-media { display: flex; gap: 16px; padding: 16px 4px; border-bottom: 1px dashed #e3e3e3; }
.cb-media-thumb { flex: 0 0 180px; width: 180px; height: 120px; background: #f2f2f2; overflow: hidden; }
.cb-media-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.cb-media-placeholder { display: flex; align-items: center; justify-content: center; height: 100%; color: #aaa; }
.cb-media-body { flex: 1 1 auto; min-width: 0; }
.cb-media-body h2 { font-size: 19px; margin-bottom: 8px; }
.cb-media-body p { color: var(--cb-sub); font-size: 13px; line-height: 1.7; margin-bottom: 10px; }
.cb-media-body footer { color: var(--cb-muted); font-size: 12px; }
.cb-media-body footer a { color: var(--cb-muted); }

/* 列表版式：纯标题 */
.cb-plain-list { padding: 8px 0; }
.cb-plain-list li { display: flex; align-items: center; gap: 12px; padding: 11px 4px; border-bottom: 1px dotted #e3e3e3; }
.cb-plain-num { flex: 0 0 22px; height: 22px; line-height: 22px; text-align: center; background: #f0f0f0; color: #777; font-size: 12px; }
.cb-plain-list li:nth-child(-n+3) .cb-plain-num { background: var(--cb-red); color: #fff; }
.cb-plain-list li a { flex: 1 1 auto; font-size: 16px; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.cb-plain-list time, .cb-plain-views { color: var(--cb-muted); font-size: 12px; flex: 0 0 auto; }

/* 搜索与 404 */
.cb-search-big { display: flex; align-items: center; gap: 8px; padding: 14px 4px 18px; }
.cb-search-big label { color: #666; }
.cb-search-big input[type="search"] { flex: 1 1 auto; min-width: 0; height: 34px; border: 1px solid var(--cb-red); padding: 0 10px; }
.cb-search-big button { height: 34px; padding: 0 20px; border: 0; background: var(--cb-red); color: #fff; }
.cb-404 { text-align: center; padding: 80px 10px; }
.cb-404 h1 { font-size: 72px; color: var(--cb-red); }
.cb-404 p { color: var(--cb-muted); margin: 10px 0 24px; }
.cb-btn { display: inline-block; background: var(--cb-red); color: #fff; padding: 8px 24px; }
.cb-btn:hover { color: #fff; background: var(--cb-red-dark); }

/* 页脚 */
.cb-footer {
    margin-left: 210px;
    border-top: 2px solid #eee;
    padding: 20px 24px 44px;
    color: #aaa;
    font-size: 12px;
    line-height: 2;
    position: relative;
    z-index: 1;
}
.cb-footer a { color: #aaa; }
.cb-footer a:hover { color: var(--cb-red); }
.cb-footer-links ul { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 6px; }
.cb-footer-legal span { margin-right: 6px; white-space: nowrap; }
.cb-backtop {
    position: fixed;
    right: 18px;
    bottom: 24px;
    z-index: 110;
    border: 1px solid #ddd;
    background: #fff;
    color: #777;
    padding: 6px 10px;
    font-size: 12px;
}
.cb-backtop:hover { color: #fff; background: var(--cb-red); border-color: var(--cb-red); }

/* 响应式 */
@media screen and (max-width: 1280px) {
    .cb-side { flex-basis: 260px; width: 260px; }
}
@media screen and (max-width: 1100px) {
    .cb-side { display: none; }
}
@media screen and (max-width: 980px) {
    .cb-rail { display: none; }
    .cb-layout { margin-left: 0; padding: 52px 16px 24px; }
    .cb-footer { margin-left: 0; }
    .cb-topbar-links { display: none; }
    .cb-menu-toggle { display: inline-block; }
    .cb-topbar-slogan { max-width: 45%; }
}
@media screen and (max-width: 768px) {
    .cb-card-grid { grid-template-columns: minmax(0, 1fr); }
    .cb-media-thumb { flex-basis: 120px; width: 120px; height: 90px; }
    .cb-post-title { font-size: 18px; }
    .cb-article-head h1 { font-size: 22px; }
    .cb-tabs-head { overflow-x: auto; flex-wrap: nowrap; }
    .cb-tab-btn { white-space: nowrap; }
}
@media screen and (max-width: 414px) {
    .cb-layout { padding: 50px 10px 20px; }
    .cb-topbar-slogan { display: none; }
    .cb-media { flex-direction: column; }
    .cb-media-thumb { width: 100%; height: 160px; flex-basis: auto; }
    .cb-post-meta { font-size: 11px; }
    .cb-footer { padding: 16px 10px 40px; }
}