header.txt 

<div class="container header-inner">
    <a class="logo" href="<?php $this->options->siteUrl(); ?>">
        <?php echo ($this->options->logoText) ? $this->options->logoText : $this->options->title(); ?>
    </a>
    <nav class="site-nav" id="site-nav">
        <a<?php if ($this->is('index')): ?> class="active"<?php endif; ?> href="<?php $this->options->siteUrl(); ?>"><?php _e('Home'); ?></a>
        <?php $this->widget('Widget_Contents_Page_List')->to($pages); ?>
        <?php while ($pages->next()): ?>
        <a<?php if ($this->is('page', $pages->slug)): ?> class="active"<?php endif; ?> href="<?php $pages->permalink(); ?>"><?php $pages->title(); ?></a>
        <?php endwhile; ?>
    </nav>
    <div class="header-actions">
        <button class="theme-toggle" id="theme-toggle" aria-label="切换主题">
            <svg class="icon-sun" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round"><circle cx="12" cy="12" r="4"/><path d="M12 2v2M12 20v2M4.9 4.9l1.4 1.4M17.7 17.7l1.4 1.4M2 12h2M20 12h2M4.9 19.1l1.4-1.4M17.7 6.3l1.4-1.4"/></svg>
            <svg class="icon-moon" width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M21 12.8A9 9 0 1 1 11.2 3a7 7 0 0 0 9.8 9.8z"/></svg>
        </button>
        <button class="nav-toggle" id="nav-toggle" aria-label="菜单">
            <span></span><span></span><span></span>
        </button>
    </div>
</div>