/* ============================================================
   帮助 / Wiki（/wiki/*）
   ------------------------------------------------------------
   风格：清爽学术风 —— 变量全部取自 theme.css，
        白底 + 1px 细线 + 单一品牌青，无渐变、无投影
   作用域：全部规则限定在 .wk-page 内
   结构：左目录卡（使用 / 出题 两组）+ 右正文卡（H1 标题 + 正文排版）
   说明：帮助页的正文是历史遗留的裸 HTML（h3 / p / pre / table 混排），
        没有统一容器；这里的 .wk-body 承担「给裸标签补排版」的职责，
        所以改样式不用动内容文件。
   ============================================================ */

.wk-page {
    padding: 22px 0 10px;
}

.wk-layout {
    display: flex;
    align-items: flex-start;
    gap: 18px;
}

/* ================================================================== 左目录 */
.wk-aside {
    flex: 0 0 214px;
    min-width: 0;
}

.wk-nav {
    position: sticky;
    top: 16px;
    padding: 14px 12px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 4px;
}

.wk-nav-group + .wk-nav-group {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--line-soft);
}

.wk-nav-title {
    padding: 0 8px 6px;
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: .4px;
    color: var(--muted);
}

.wk-nav-item {
    display: block;
    padding: 6px 8px;
    margin-bottom: 1px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--ink-2);
    border-left: 2px solid transparent;
    border-radius: 0 3px 3px 0;
    transition: color .15s ease, background .15s ease;
}

.wk-nav-item:hover {
    color: var(--brand);
    background: var(--brand-soft);
    text-decoration: none;
}

.wk-nav-item.is-active {
    color: var(--brand);
    font-weight: 600;
    background: var(--brand-soft);
    border-left-color: var(--brand);
}

.wk-aside-note {
    margin: 12px 0 0;
    padding: 0 4px;
    font-size: 11.5px;
    line-height: 1.9;
    color: var(--muted);
}

.wk-aside-note a {
    color: var(--ink-2);
    border-bottom: 1px solid var(--line);
}

.wk-aside-note a:hover {
    color: var(--brand);
    border-bottom-color: var(--brand);
}

/* ================================================================== 右正文 */
.wk-main {
    flex: 1 1 auto;
    min-width: 0;
    padding: 22px 26px 26px;
    background: var(--paper);
    border: 1px solid var(--line);
    border-radius: 4px;
}

.wk-title {
    margin: 0 0 16px;
    padding-bottom: 12px;
    font-size: 20px;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: .2px;
    color: var(--ink);
    border-bottom: 1px solid var(--line);
}

/* ------------------------------------------------- 给历史遗留的裸标签补排版 */
.wk-body {
    font-size: 13.5px;
    line-height: 1.9;
    color: var(--ink-2);
}

.wk-body > :first-child {
    margin-top: 0;
}

.wk-body > :last-child {
    margin-bottom: 0;
}

.wk-body h2,
.wk-body h3 {
    margin: 24px 0 9px;
    font-size: 14px;
    font-weight: 600;
    line-height: 1.6;
    letter-spacing: .2px;
    color: var(--ink);
}

.wk-body h2:first-child,
.wk-body h3:first-child {
    margin-top: 0;
}

/* 章节标题前的小竖线：正文里 h3 很多，不加标记会糊成一片 */
.wk-body h2::before,
.wk-body h3::before {
    content: "";
    display: inline-block;
    width: 3px;
    height: 12px;
    margin-right: 8px;
    vertical-align: -1px;
    background: var(--brand);
    border-radius: 2px;
}

.wk-body h4 {
    margin: 16px 0 6px;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink-2);
}

.wk-body p {
    margin: 0 0 10px;
}

.wk-body ul,
.wk-body ol {
    margin: 0 0 10px;
    padding-left: 22px;
}

.wk-body li {
    margin-bottom: 4px;
}

.wk-body b,
.wk-body strong {
    font-weight: 600;
    color: var(--ink);
}

.wk-body a {
    color: var(--brand);
    border-bottom: 1px solid rgba(15, 92, 107, .25);
}

.wk-body a:hover {
    border-bottom-color: var(--brand);
}

.wk-body hr {
    margin: 22px 0;
    border: 0;
    border-top: 1px solid var(--line);
}

.wk-body blockquote {
    margin: 0 0 14px;
    padding: 10px 16px;
    font-size: 13px;
    color: var(--ink-3);
    background: #FAFBFA;
    border-left: 2px solid var(--line);
    border-radius: 0 3px 3px 0;
}

.wk-body blockquote > :last-child {
    margin-bottom: 0;
}

/* ------------------------------------------------------------ 行内代码 / 代码块 */
.wk-body code {
    padding: 1px 5px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
    font-size: 12.5px;
    color: var(--brand);
    background: var(--brand-soft);
    border-radius: 2px;
}

.wk-body pre {
    padding: 12px 14px;
    margin: 0 0 14px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
    font-size: 12.5px;
    line-height: 1.75;
    color: var(--ink-2);
    background: #F7F8F7;
    border: 1px solid var(--line);
    border-radius: 3px;
    overflow: auto;
}

.wk-body pre code {
    padding: 0;
    color: inherit;
    background: transparent;
    font-size: inherit;
}

/* spj.php 里的代码用 <div class="pre"><p>…</p></div> 包着 */
.wk-body .pre {
    padding: 12px 14px;
    margin: 0 0 14px;
    background: #F7F8F7;
    border: 1px solid var(--line);
    border-radius: 3px;
    overflow: auto;
}

.wk-body .pre p {
    margin: 0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
    font-size: 12.5px;
    line-height: 1.75;
    white-space: pre-wrap;
    word-break: break-all;
    background: transparent;
}

/* ================================================================ 正文表格 */
.wk-body .table-responsive {
    margin-bottom: 14px;
    border: 0;
}

.wk-body .table {
    width: 100%;
    margin-bottom: 0;
    font-size: 13px;
    color: var(--ink-2);
    border-collapse: collapse;
}

.wk-body .table > thead > tr > th {
    padding: 9px 12px;
    font-size: 11.5px;
    font-weight: 500;
    color: var(--muted);
    text-align: left;
    vertical-align: middle;
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--line);
    white-space: nowrap;
}

.wk-body .table > tbody > tr > th,
.wk-body .table > tbody > tr > td {
    padding: 9px 12px;
    font-weight: 400;
    font-size: 13px;
    vertical-align: top;
    border: 0;
    border-bottom: 1px solid var(--line-soft);
}

.wk-body .table > tbody > tr > th {
    font-weight: 500;
    color: var(--ink);
    white-space: nowrap;
}

.wk-body .table > tbody > tr:last-child > th,
.wk-body .table > tbody > tr:last-child > td {
    border-bottom: 0;
}

.wk-body .table-bordered {
    border: 1px solid var(--line);
    border-radius: 3px;
}

.wk-body .table-bordered > thead > tr > th {
    background: #FAFBFA;
}

.wk-body .table-bordered > tbody > tr > th,
.wk-body .table-bordered > tbody > tr > td {
    border: 0;
    border-bottom: 1px solid var(--line-soft);
}

/* ============================================== 系统信息页的结构化内容块 */
.wk-lead {
    margin: 0 0 20px;
    font-size: 13px;
    line-height: 1.9;
    color: var(--ink-3);
}

.wk-sec {
    margin-bottom: 24px;
}

.wk-sec:last-child {
    margin-bottom: 0;
}

.wk-sec-title {
    margin: 0;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: .2px;
    color: var(--ink);
}

.wk-sec-title::before {
    content: "";
    display: inline-block;
    width: 3px;
    height: 12px;
    margin-right: 8px;
    vertical-align: -1px;
    background: var(--brand);
    border-radius: 2px;
}

.wk-sec-note {
    margin: 6px 0 12px;
    font-size: 12px;
    line-height: 1.8;
    color: var(--muted);
}

.wk-table-wrap {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.wk-table {
    width: 100%;
    border-collapse: collapse;
}

.wk-table > thead > tr > th {
    padding: 9px 12px;
    font-size: 11.5px;
    font-weight: 500;
    color: var(--muted);
    text-align: left;
    white-space: nowrap;
    border-bottom: 1px solid var(--line);
}

.wk-table > tbody > tr > th,
.wk-table > tbody > tr > td {
    padding: 10px 12px;
    font-size: 13px;
    color: var(--ink-2);
    vertical-align: top;
    border-bottom: 1px solid var(--line-soft);
}

.wk-table > tbody > tr:last-child > th,
.wk-table > tbody > tr:last-child > td {
    border-bottom: 0;
}

.wk-table > tbody > tr:hover > td,
.wk-table > tbody > tr:hover > th {
    background: #FAFBFA;
}

.wk-table .c-lang {
    width: 88px;
    font-weight: 600;
    color: var(--ink);
    white-space: nowrap;
}

.wk-table .c-en {
    width: 190px;
    white-space: nowrap;
}

.wk-table .c-cn {
    width: 120px;
    white-space: nowrap;
}

/* 编译命令很长，允许横向滚动而不是把表格撑破 */
.wk-cmd {
    display: inline-block;
    padding: 3px 7px;
    font-size: 12px;
    line-height: 1.7;
    color: var(--ink-2);
    background: #F7F8F7;
    border: 1px solid var(--line);
    border-radius: 2px;
    white-space: nowrap;
}

/* 评测结果按「通过 / 自己的问题 / 排队中」三色 */
.wk-res {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;
    font-size: 12px;
    white-space: nowrap;
}

.wk-res.is-ok {
    color: var(--ok);
    font-weight: 600;
}

.wk-res.is-no {
    color: var(--danger);
}

.wk-res.is-wait {
    color: var(--muted);
}

/* ================================================================ 响应式 */
@media (max-width: 991px) {
    .wk-layout {
        flex-direction: column;
        /* 列方向下 flex-start 会让子项按内容宽度（max-content）撑开，
           表格一长整页就出横向滚动条；必须改回 stretch */
        align-items: stretch;
    }

    .wk-aside {
        flex: 1 1 auto;
        width: 100%;
    }

    /* 窄屏目录不吸顶，改成横排可换行的标签条 */
    .wk-nav {
        position: static;
        display: flex;
        flex-wrap: wrap;
        gap: 4px 6px;
        padding: 10px 12px;
    }

    .wk-nav-group {
        display: flex;
        flex-wrap: wrap;
        align-items: center;
        gap: 4px;
    }

    .wk-nav-group + .wk-nav-group {
        margin-top: 0;
        padding-top: 0;
        border-top: 0;
    }

    .wk-nav-title {
        padding: 4px 4px 4px 0;
    }

    .wk-nav-item {
        padding: 4px 10px;
        margin-bottom: 0;
        border-left: 0;
        border: 1px solid var(--line);
        border-radius: 3px;
        font-size: 12.5px;
    }

    .wk-nav-item.is-active {
        border-color: var(--brand);
    }

    .wk-aside-note {
        display: none;
    }
}

@media (max-width: 767px) {
    .wk-page {
        padding: 16px 0 6px;
    }

    .wk-main {
        padding: 16px 15px 18px;
    }

    .wk-title {
        font-size: 18px;
    }

    .wk-body {
        font-size: 13px;
    }

    /* 窄屏不要压缩列宽（会变成一字一行），给个最小可读宽度，
       让 .wk-table-wrap / .table-responsive 自己横向滚动 */
    .wk-table {
        min-width: 560px;
    }

    .wk-table .c-en,
    .wk-table .c-cn {
        width: auto;
        white-space: nowrap;
    }

    .wk-body .table {
        min-width: 520px;
    }
}