$page_titles = [
    1 => "Hot Community - Breaking News Every Day",
    2 => "华人头条 - 全球华人最大的社交门户"
];

page_header($page_titles[$lang_id] ?? "Breaking News Every Day");

/*
|--------------------------------------------------------------------------
| 只在首页执行语言路由
|--------------------------------------------------------------------------
*/
$current_uri = $_SERVER['REQUEST_URI'] ?? '/';
$current_langs = $system['language']['code'] ?? 'en_us';

/* 只允许在首页 / newsfeed 跳转 */
$is_homepage = (
    $current_uri === '/' ||
    strpos($current_uri, '/newsfeed') === 0
);

if ($is_homepage) {
    if ($current_langs === 'zh_tw') {
        header("Location: /tw");
        exit;
    }

    if ($current_langs !== 'en_us' && $current_langs !== 'cn_cn') {
        header("Location: /newsfeed?lang=en_us");
        exit;
    }
}

/* 所有页面（包括新闻详情）统一正常输出 */
page_footer("main");