{# trade-pro listing / category — cms 列表设计移植（Task 10c）。
   设计源 D:/project/cms/runtimes/astro-site-runtime/src/pages/[locale]/：
   - products/[...page].astro：PageHero + 260px 产品分类侧栏（sticky）+
     SectionHead + 3 列卡片栅格（CardGrid cols-3）+ 窗口式分页
   - news/[...page].astro：PageHero + 1fr/310px 双栏；列表列为横向新闻行
     （290px 封面 + tag/标题/摘要/Read more），侧栏三盒
     （Latest / Popular / Categories 计数）
   与 cms 的结构决策：
   1. kind 分支按列表内容类型：post 类（/news/、/post/ 等文章集合）用
      新闻行形态；其余（product/vehicle/brand/case/service）复用产品卡片
      栅格——cms 只定义了这两种列表设计，品牌/案例/服务映射到产品卡形态
      （与 brand.html 相关产品、product.html 相关产品一致）。
   2. 产品分类侧栏仅产品类列表渲染（侧栏链接是产品分类语义，出现在
      /brands/ 等页面会误导）；文章分支的侧栏是 cms 新闻三盒。空分类
      数据时侧栏整段隐藏，主列变单栏。
   3. cms news 页的 Tab 行（All/Company News/...）与 products 页 hero 的
      “Explore Products”锚点按钮是内容数据驱动 / 页内锚点跳转，平台无
      对应数据源与目标锚点，不移植；筛选面板承担列表交互入口。
   4. 平台筛选契约（test_theme_pro_v3 对所有主题 listing 断言）保留：
      filters() 宏输出 .pro-filter-panel 且必须保持为 .pro-filter-scope
      的紧邻前兄弟（pro.js 用 previousElementSibling 定位面板）；卡片与
      新闻行都携带 .pro-card + data-brand/data-category（pro.js 过滤的
      数据源与零结果空态都依赖它们）。
   5. 分页器是 cms Pagination 的窗口式页码（首尾必现 + 当前±2，其余折叠
      为省略号），上一页/下一页用 arrow-left/arrow-right SVG（Task 9 图标
      契约：交互箭头一律 SVG，无裸箭头字符）；页码 URL 与构建期静态分页
      路由一致（第 1 页 = 栏目根，形如 /products/page/2/ 递增）。
   6. 空列表：筛选、栅格、分页整段隐藏，替换为友好空态提示（cms 站点
      恒有内容，平台必须处理 noindex 栏目占位页的空集）。 #}
{% set tp_post_like = (listing and listing[0].type == 'post') or ('news' in route or 'post' in route) %}
{% set tp_eyebrow = 'NEWS & INSIGHTS' if tp_post_like else 'PRODUCT CATALOGUE' %}
{% set tp_hero_img = safe_image(page.cover) %}
{% set tp_lead = page.summary or ('Industry updates, project stories and exhibition news from our team.' if tp_post_like else 'Browse the full catalogue with specifications, brands and categories.') %}
{% set pg_root = (route.split('/page/')[0]).rstrip('/') ~ '/' %}
{# 分页导航宏：显式传参（pg/base/icon），不依赖模板上下文闭包 #}
{% macro tp_pages(pg, base, icon) -%}
{% if pg and pg.pages > 1 %}
{% set cur = pg.page %}{% set last = pg.pages %}{% set win = [] %}
{% for i in range(1, last + 1) %}
{% if i == 1 or i == last or (i - cur)|abs <= 2 %}{% if win.append(i) %}{% endif %}
{% elif win and win[-1] != '…' %}{% if win.append('…') %}{% endif %}{% endif %}
{% endfor %}
<nav class="sf-tp-pagination" aria-label="Pagination">
  {% if pg.previous %}<a class="sf-tp-page-arrow" href="{{ pg.previous }}" rel="prev" aria-label="Previous page">{{ icon('arrow-left', size='16') }}</a>
  {% else %}<span class="sf-tp-page-arrow is-disabled" aria-hidden="true">{{ icon('arrow-left', size='16') }}</span>{% endif %}
  {% for n in win %}{% if n == '…' %}<span class="sf-tp-page-dots">…</span>
  {% elif n == cur %}<span class="sf-tp-page-num is-active" aria-current="page">{{ n }}</span>
  {% else %}<a class="sf-tp-page-num" href="{{ base if n == 1 else base ~ 'page/' ~ n ~ '/' }}">{{ n }}</a>{% endif %}{% endfor %}
  {% if pg.next %}<a class="sf-tp-page-arrow" href="{{ pg.next }}" rel="next" aria-label="Next page">{{ icon('arrow-right', size='16') }}</a>
  {% else %}<span class="sf-tp-page-arrow is-disabled" aria-hidden="true">{{ icon('arrow-right', size='16') }}</span>{% endif %}
</nav>
{% endif %}
{%- endmacro %}
<section class="sf-tp-page-hero">
  {% if tp_hero_img %}<img class="sf-tp-page-hero-bg" src="{{ tp_hero_img }}" alt="" width="1600" height="900" fetchpriority="high" decoding="async">{% endif %}
  <div class="sf-tp-page-hero-overlay" aria-hidden="true"></div>
  <div class="wrap">
    <div class="sf-tp-page-hero-copy" data-reveal>
      <span class="eyebrow">{{ tp_eyebrow }}</span>
      <h1>{{ page.title }}</h1>
      <p class="sf-tp-page-hero-lead">{{ tp_lead }}</p>
    </div>
  </div>
</section>
{% if listing %}
{% if tp_post_like %}
<section class="section sf-tp-news-section"><div class="wrap"><div class="sf-tp-news-layout">
  <div class="sf-tp-news-list">
    {{ filters() }}
    <div class="pro-filter-scope sf-tp-news-rows">
      {% for item in listing %}
      <article class="sf-tp-news-row pro-card" data-reveal style="--reveal-i: {{ loop.index0 % 3 }}" data-brand="{{ fields_of(item).get('brand','') }}" data-category="{{ fields_of(item).get('category','') }}">
        <div class="sf-tp-news-row-media sf-tp-card-media">{{ cover(item, 'post') }}</div>
        <div class="sf-tp-news-body">
          <span class="sf-tp-tag">{{ fields_of(item).get('tag') or fields_of(item).get('category') or 'News' }}</span>
          <h3><a href="{{ safe_href(item.route) }}">{{ item.title }}</a></h3>
          <p>{{ (item.summary or '')[:200] }}</p>
          <a class="sf-tp-more" href="{{ safe_href(item.route) }}">Read more {{ icon('arrow-right', cls='sf-tp-icon--sm') }}</a>
        </div>
      </article>
      {% endfor %}
    </div>
    {{ tp_pages(pagination, pg_root, icon) }}
  </div>
  <aside class="sf-tp-news-aside">
    <div class="sf-tp-aside-box" data-reveal><h3>Latest posts</h3>{% for p in listing[:5] %}<p><a href="{{ safe_href(p.route) }}">{{ p.title }}</a></p>{% endfor %}</div>
    <div class="sf-tp-aside-box" data-reveal style="--reveal-i: 1"><h3>Popular reads</h3><ol>{% for p in listing[:5] %}<li>{{ p.title }}</li>{% endfor %}</ol></div>
    <div class="sf-tp-aside-box" data-reveal style="--reveal-i: 2"><h3>Categories</h3><p>All news <strong>{{ groups['post']|length }}</strong></p></div>
  </aside>
</div></div></section>
{% else %}
{% set tp_kind = listing[0].type %}
{% set tp_show_side = categories and tp_kind in ('product', 'vehicle') %}
<section class="section sf-tp-catalogue-section"><div class="wrap{{ ' sf-tp-catalogue-layout' if tp_show_side else ' sf-tp-catalogue-single' }}">
  {% if tp_show_side %}
  <aside class="sf-tp-side-panel" aria-label="Product categories" data-reveal>
    <h3>Product categories</h3>
    <a class="sf-tp-side-link{{ ' sf-tp-side-link--active' if route == '/products/' }}" href="/products/">All products</a>
    {% for cat in categories[:12] %}<a class="sf-tp-side-link{{ ' sf-tp-side-link--active' if cat.url == route }}" href="{{ cat.url }}">{{ cat.name }}</a>{% endfor %}
  </aside>
  {% endif %}
  <div class="sf-tp-catalogue-main">
    <div class="sf-tp-section-head" data-reveal>
      <div><span class="eyebrow">{{ tp_eyebrow }}</span><h2>{{ page.title }}</h2></div>
      <p class="sf-tp-intro">{{ tp_lead }}</p>
    </div>
    {{ filters() }}
    <div class="pro-filter-scope sf-tp-card-grid sf-tp-card-grid--listing">
      {% for item in listing %}
      <a class="sf-tp-card pro-card" href="{{ safe_href(item.route) }}" data-reveal style="--reveal-i: {{ loop.index0 % 4 }}" data-brand="{{ fields_of(item).get('brand','') }}" data-category="{{ fields_of(item).get('category','') }}">
        <div class="sf-tp-card-media">{{ cover(item, tp_kind) }}</div>
        <div class="sf-tp-card-body">
          <h3>{{ item.title }}</h3>
          <p>{{ (item.summary or 'Published specifications available on request.').split('.')[0] }}.</p>
          <span class="sf-tp-more">View details {{ icon('arrow-right', cls='sf-tp-icon--sm') }}</span>
        </div>
      </a>
      {% endfor %}
    </div>
    {{ tp_pages(pagination, pg_root, icon) }}
  </div>
</div></section>
{% endif %}
{% else %}
<section class="section sf-tp-listing-section"><div class="wrap">
  <div class="sf-tp-listing-empty" data-reveal>
    <h2>Nothing published here yet</h2>
    <p>Content added to this section in the admin console appears here automatically.</p>
  </div>
</div></section>
{% endif %}