/* ============================================================
   Mirage KB — 知识博客版式
   布局性改动：知识库引导条 / 分类目录卡 / 阅读优先书单
   ============================================================ */

:root {
    --kb-indigo: #4f46e5;
    --kb-indigo-soft: #eef2ff;
    --kb-ink: #1e293b;
    --kb-grey: #64748b;
    --kb-line: #e7e5e4;
    --kb-paper: #fbfaf8;
}

body.rv-kb {
    font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
    background: var(--kb-paper);
    color: var(--kb-ink);
}

/* ---------- 覆盖父主题 .main-container 的 flex 布局 ---------- */
.kb-intro,
.kb-cats,
.kb-list-wrap {
    display: block;
    width: 100%;
    max-width: 860px;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
    padding-left: 12px;
    padding-right: 12px;
}

/* ---------- 头部：白纸 + indigo ---------- */
.header.pc,
.header.mobile {
    background: #fff !important;
    border-bottom: 1px solid var(--kb-line);
    box-shadow: none;
}
.header .header-nav .logo,
.header .header-nav .logo a,
.header .site-title a {
    color: var(--kb-indigo) !important;
    font-weight: 800;
}
.header .header-nav .nav-menu li a,
.header .header-nav .main-menu li a,
.header .header-nav .menu li a,
.header .header-nav .pc-nav li a,
.header .header-nav .pc-nav li span {
    color: #475569 !important;
    font-weight: 500;
}
.header .header-nav .nav-menu li a:hover,
.header .header-nav .main-menu li a:hover,
.header .header-nav .menu li a:hover,
.header .header-nav .pc-nav li a:hover,
.header .header-nav .pc-nav li.current-menu-item a {
    color: var(--kb-indigo) !important;
    background: transparent;
    box-shadow: inset 0 -2px 0 var(--kb-indigo);
}

/* ---------- 知识库引导条 ---------- */
.kb-intro { margin-top: 22px; }
.kb-intro-card {
    background: linear-gradient(135deg, var(--kb-indigo-soft), #fff 65%);
    border: 1px solid #e0e7ff;
    border-radius: 14px;
    padding: 26px 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}
.kb-brand {
    margin: 0 0 6px;
    font-size: 25px;
    font-weight: 800;
    color: var(--kb-ink);
}
.kb-brand::after {
    content: "";
    display: block;
    width: 46px;
    height: 3px;
    background: var(--kb-indigo);
    border-radius: 2px;
    margin-top: 9px;
}
.kb-tagline {
    margin: 0;
    color: var(--kb-grey);
    font-size: 14px;
    line-height: 1.7;
}
.kb-intro-search { flex-shrink: 0; min-width: 260px; }
.kb-intro-search input[type="text"],
.kb-intro-search input[type="search"] {
    width: 100%;
    box-sizing: border-box;
    padding: 10px 14px;
    border: 1px solid var(--kb-line);
    border-radius: 10px;
    font-size: 14px;
    background: #fff;
    outline: none;
}
.kb-intro-search input:focus { border-color: var(--kb-indigo); }

/* ---------- 分区标题 ---------- */
.kb-sec-head {
    margin: 30px 0 16px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--kb-line);
}
.kb-sec-title {
    margin: 0;
    font-size: 18px;
    font-weight: 700;
    color: var(--kb-ink);
    display: flex;
    align-items: center;
    gap: 9px;
}
.kb-sec-title::before {
    content: "#";
    color: var(--kb-indigo);
    font-weight: 800;
}

/* ---------- 分类目录卡 ---------- */
.kb-cat-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
}
.kb-cat-card {
    display: block;
    background: #fff;
    border: 1px solid var(--kb-line);
    border-radius: 12px;
    padding: 16px 18px;
    text-decoration: none;
    transition: border-color 0.25s, box-shadow 0.25s;
}
.kb-cat-card:hover {
    border-color: var(--kb-indigo);
    box-shadow: 0 4px 14px rgba(79, 70, 229, 0.1);
}
.kb-cat-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}
.kb-cat-name {
    font-size: 15.5px;
    font-weight: 700;
    color: var(--kb-ink);
}
.kb-cat-card:hover .kb-cat-name { color: var(--kb-indigo); }
.kb-cat-count {
    font-size: 12px;
    color: var(--kb-indigo);
    background: var(--kb-indigo-soft);
    padding: 2px 9px;
    border-radius: 12px;
}
.kb-cat-latest {
    color: var(--kb-grey);
    font-size: 12.5px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 阅读书单 ---------- */
.kb-list-wrap { margin-top: 8px; margin-bottom: 16px; }
.kb-list { list-style: none; margin: 0; padding: 0; }
.kb-item {
    background: #fff;
    border: 1px solid var(--kb-line);
    border-radius: 12px;
    padding: 18px 22px;
    margin-bottom: 14px;
    transition: border-color 0.25s;
}
.kb-item:hover { border-color: #c7d2fe; }
.kb-item-head {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}
.kb-cat-chip {
    font-size: 12px;
    color: var(--kb-indigo);
    background: var(--kb-indigo-soft);
    padding: 2px 10px;
    border-radius: 12px;
    text-decoration: none;
    white-space: nowrap;
}
.kb-item-title {
    margin: 0;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
    min-width: 0;
}
.kb-item-title a { color: var(--kb-ink); text-decoration: none; }
.kb-item-title a:hover { color: var(--kb-indigo); }
.kb-item-excerpt {
    margin: 0 0 12px;
    color: var(--kb-grey);
    font-size: 14px;
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.kb-item-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #94a3b8;
    font-size: 12.5px;
}
.kb-readlink {
    margin-left: auto;
    color: var(--kb-indigo);
    font-size: 13px;
    text-decoration: none;
}
.kb-readlink:hover { text-decoration: underline; }

.kb-empty {
    text-align: center;
    color: #94a3b8;
    padding: 50px 0;
    font-size: 15px;
}

/* ---------- 分页 ---------- */
.kb-pagination { margin-top: 18px; text-align: center; }
.kb-pagination .page-numbers {
    display: inline-block;
    min-width: 36px;
    padding: 8px 13px;
    margin: 0 3px;
    background: #fff;
    border: 1px solid var(--kb-line);
    color: var(--kb-ink);
    text-decoration: none;
    border-radius: 8px;
    font-size: 14px;
}
.kb-pagination .page-numbers.current,
.kb-pagination .page-numbers:hover {
    background: var(--kb-indigo);
    border-color: var(--kb-indigo);
    color: #fff;
}

/* ---------- 响应式 ---------- */
@media (max-width: 768px) {
    .kb-cat-grid { grid-template-columns: repeat(2, 1fr); }
    .kb-intro-card { flex-direction: column; align-items: stretch; }
    .kb-intro-search { min-width: 0; }
}
@media (max-width: 480px) {
    .kb-cat-grid { grid-template-columns: 1fr; }
    .kb-item-head { flex-wrap: wrap; }
}

/* 搜索表单内联化 */
.kb-intro-search .search-form,
.kb-intro-search form {
    display: flex;
    gap: 8px;
}
.kb-intro-search .search-form input[type="text"],
.kb-intro-search form input[type="text"],
.kb-intro-search form input[type="search"] {
    flex: 1;
}
.kb-intro-search .search-submit,
.kb-intro-search form button,
.kb-intro-search form input[type="submit"] {
    padding: 10px 18px;
    background: var(--kb-indigo);
    color: #fff;
    border: none;
    border-radius: 10px;
    font-size: 14px;
    cursor: pointer;
}

/* ============================================================
   文章阅读页（single.php）
   ============================================================ */
.kb-article {
    display: block;
    width: 100%;
    max-width: 820px;
    margin-left: auto;
    margin-right: auto;
    box-sizing: border-box;
    padding: 0 12px;
    margin-top: 22px;
}
.kb-post {
    background: #fff;
    border: 1px solid var(--kb-line);
    border-radius: 14px;
    padding: 30px 34px 28px;
}
/* 本篇目录盒：知识库文档风（本主题独有版块） */
.kb-toc {
    background: var(--kb-indigo-soft);
    border: 1px solid #dfe3fb;
    border-left: 4px solid var(--kb-indigo);
    border-radius: 8px;
    padding: 15px 20px 13px;
    margin: 0 0 26px;
}
.kb-toc-title {
    font-size: 14.5px;
    font-weight: 800;
    color: var(--kb-ink);
    margin-bottom: 9px;
    letter-spacing: 0.5px;
}
.kb-toc-list { margin: 0; padding-left: 20px; }
.kb-toc-list li { margin-bottom: 5px; line-height: 1.7; }
.kb-toc-list a { color: #3f4a68; text-decoration: none; font-size: 14.5px; }
.kb-toc-list a:hover { color: var(--kb-indigo); text-decoration: underline; }
/* 文档式小标题：靛蓝左标（与新闻的红下划线、卡片的衬线金线区分开） */
.kb-post-content h2 {
    font-size: 19px;
    font-weight: 800;
    margin: 30px 0 12px;
    padding-left: 12px;
    border-left: 4px solid var(--kb-indigo);
    line-height: 1.5;
}
.kb-post-content h3 {
    font-size: 16.5px;
    font-weight: 700;
    margin: 24px 0 10px;
    color: #3f4a68;
    padding-left: 10px;
    border-left: 2px solid #c7d2fe;
}
.kb-post-head { margin-bottom: 22px; }
.kb-cat-chip {
    display: inline-block;
    font-size: 12px;
    color: var(--kb-indigo);
    background: var(--kb-indigo-soft);
    padding: 3px 11px;
    border-radius: 12px;
    text-decoration: none;
    margin-bottom: 12px;
}
.kb-post-title {
    margin: 0 0 12px;
    font-size: 26px;
    font-weight: 800;
    line-height: 1.4;
    color: var(--kb-ink);
}
.kb-post-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #94a3b8;
    font-size: 13px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--kb-line);
}
.kb-post-content {
    font-size: 16px;
    line-height: 1.9;
    color: #334155;
    padding-top: 20px;
}
.kb-post-content h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--kb-ink);
    margin: 30px 0 12px;
    padding-left: 11px;
    border-left: 4px solid var(--kb-indigo);
    line-height: 1.4;
}
.kb-post-content h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--kb-ink);
    margin: 24px 0 10px;
}
.kb-post-content p { margin: 0 0 16px; }
.kb-post-content ul,
.kb-post-content ol { margin: 0 0 16px; padding-left: 24px; }
.kb-post-content li { margin-bottom: 7px; line-height: 1.8; }
.kb-post-content a { color: var(--kb-indigo); }
.kb-post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
}
.kb-post-content blockquote {
    margin: 18px 0;
    padding: 12px 18px;
    background: var(--kb-indigo-soft);
    border-left: 3px solid var(--kb-indigo);
    border-radius: 0 8px 8px 0;
    color: #475569;
}
.kb-post-foot {
    margin-top: 28px;
    padding-top: 16px;
    border-top: 1px solid var(--kb-line);
}
.kb-foot-cat {
    color: var(--kb-indigo);
    font-size: 14px;
    text-decoration: none;
}
.kb-foot-cat:hover { text-decoration: underline; }
.kb-post-nav {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    margin-top: 18px;
}
.kb-post-nav span { flex: 1; min-width: 0; }
.kb-post-nav a {
    display: block;
    background: #fff;
    border: 1px solid var(--kb-line);
    border-radius: 12px;
    padding: 13px 16px;
    color: var(--kb-ink);
    font-size: 14px;
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.kb-post-nav a:hover {
    color: var(--kb-indigo);
    border-color: #c7d2fe;
}
.kb-post-nav .kb-nav-next { text-align: right; }
@media (max-width: 640px) {
    .kb-post { padding: 22px 18px; }
    .kb-post-title { font-size: 22px; }
    .kb-post-nav a { white-space: normal; }
}

/* 全局图片安全：用户插入的固定宽度图片不得撑破移动端 */
.na-content img, .kb-post-content img, .mc-post-content img, .wi-entry-content img,
.news-article img, .kb-article img, .mc-article img, .wi-article img {
    max-width: 100%;
    height: auto;
}