/* ベイズ最適化で --link-color が上書きされる */
:root { --link-color: #1d4ed8; }

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui;
  font-size: 1rem; line-height: 1.75;
  color: #111827; background: #fff;
  padding: 1.5rem 0.75rem;
}

#wrapper { max-width: 680px; margin: 0 auto; }

/* ヘッダー */
header#site-header { display: flex; justify-content: space-between; align-items: center; padding-bottom: 0.75rem; margin-bottom: 2rem; border-bottom: 1px solid #e5e7eb; }
header#site-header a { font-size: 1.5rem; font-weight: 700; color: #111827; text-decoration: none; }
.github-link { font-size: 0; color: #374151; display: flex; align-items: center; }
.github-link:hover { color: #111827; }

/* タグ */
.tag-section { margin-top: 2rem; padding-top: 0.5rem; }
.page-title { font-size: 1rem; font-weight: 700; color: #374151; margin-bottom: 0.75rem; }
.tag-list { list-style: none; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag-list li { display: flex; align-items: center; gap: 0.35rem; }
.tag-count { font-size: 0.75rem; color: #6b7280; }

/* リンク（--link-color がベイズで動的に変わる） */
a { color: var(--link-color); background-image: paint(link-color); text-decoration: none; }
@supports not (background-image: paint(link-color)) { a { text-decoration: underline; } }
a:hover { text-decoration: underline; }

/* 記事一覧 */
.post-list { list-style: none; }
.post-list li { display: flex; align-items: baseline; gap: 0.75rem; padding: 0.25rem 0; flex-wrap: wrap; }
.post-list a { font-weight: 700; }
.post-list time { font-size: 0.875rem; color: #6b7280; white-space: nowrap; flex-shrink: 0; }
.tags { font-size: 0.75rem; color: #6b7280; background: #e5e7eb; padding: 0.1rem 0.4rem; border-radius: 3px; }

/* 記事ヘッダー */
article header { margin-bottom: 1.5rem; }
article header h1 { font-size: 2rem; font-weight: 700; margin: 0.5rem 0 0.25rem; }
.meta { font-size: 0.875rem; color: #374151; margin-top: 0.25rem; }
.back-link { display: inline-block; font-size: 0.875rem; margin-bottom: 1rem; }
article footer { margin-top: 2rem; padding-top: 1rem; border-top: 1px solid #e5e7eb; }

/* 本文 */
.post-body h1, .post-body h2 { margin: 1.5rem 0 0.5rem; padding-bottom: 0.25rem; border-bottom: 1px solid #e5e7eb; font-weight: 600; }
.post-body h1 { font-size: 1.5rem; }
.post-body h2 { font-size: 1.25rem; }
.post-body h3 { font-size: 1.1rem; font-weight: 600; margin: 1.5rem 0 0.5rem; }
.post-body p { margin: 0.75rem 0; }
.post-body ul { list-style: disc; margin: 0.75rem 0 0.75rem 2rem; }
.post-body ol { list-style: decimal; margin: 0.75rem 0 0.75rem 2rem; }
.post-body li { margin: 0.25rem 0; }
.post-body pre { background: #f3f4f6; border-radius: 4px; padding: 1rem; overflow-x: auto; margin: 1rem 0; font-size: 0.875rem; }
.post-body code { font-family: 'SFMono-Regular', Consolas, Menlo, monospace; font-size: 0.875em; }
.post-body p code, .post-body li code { background: #e5e7eb; padding: 0.1em 0.3em; border-radius: 3px; }
.post-body blockquote { border-left: 4px solid #d1d5db; margin: 1rem 0; padding: 0.25rem 1rem; color: #374151; }
.post-body img { max-width: 100%; height: auto; }
.post-body hr { border: none; border-top: 1px solid #e5e7eb; margin: 2rem 0; }
.post-body table { border-collapse: collapse; width: 100%; margin: 1rem 0; }
.post-body th, .post-body td { border: 1px solid #d1d5db; padding: 0.4rem 0.75rem; text-align: left; }
.post-body th { background: #f3f4f6; font-weight: 600; }