<?php
header('Content-Type: application/xml; charset=utf-8');
$currentHostRaw = $_SERVER['HTTP_HOST'] ?? '';
$currentHost = htmlspecialchars($currentHostRaw, ENT_XML1 | ENT_QUOTES, 'UTF-8');
$currentScheme = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') ? 'https' : 'http';
$baseUrl = $currentHost ? $currentScheme . '://' . $currentHost : '';
$today = date('Y-m-d');
$paths = ['/', '/about/', '/recommend/', '/cases/', '/insights/', '/guide/', '/logs/'];
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<?php foreach ($paths as $path): ?>
  <url>
    <loc><?= $baseUrl . $path ?></loc>
    <lastmod><?= $today ?></lastmod>
    <changefreq>daily</changefreq>
    <priority><?= $path === '/' ? '1.0' : '0.8' ?></priority>
  </url>
<?php endforeach; ?>
</urlset>
