:root{--bg:#fff;--fg:#1f2328;--muted:#6b7280;--line:#e5e7eb;--accent:#2563eb}
@media (prefers-color-scheme:dark){:root{--bg:#111315;--fg:#e6e6e6;--muted:#9aa0a6;--line:#2a2e33;--accent:#7aa7ff}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:17px/1.8 -apple-system,"Segoe UI","Noto Sans TC","Microsoft JhengHei",sans-serif}
a{color:var(--accent);text-decoration:none}a:hover{text-decoration:underline}
.site-header{display:flex;justify-content:space-between;align-items:center;max-width:720px;margin:0 auto;padding:24px 16px;border-bottom:1px solid var(--line)}
.site-title{font-size:1.3rem;font-weight:700;color:var(--fg)}
.site-header nav a{margin-left:18px;color:var(--muted)}
.wrap{max-width:720px;margin:0 auto;padding:32px 16px}
.post-list{list-style:none;margin:0;padding:0}
.post-list li{padding:18px 0;border-bottom:1px solid var(--line)}
.post-title{font-size:1.2rem;font-weight:600;color:var(--fg)}
.meta{color:var(--muted);font-size:.9rem}
.excerpt{margin:6px 0 0;color:var(--muted)}
.article-header h1{margin:0 0 4px;font-size:1.8rem;line-height:1.4}
.article-body{margin-top:24px}
.article-body img{max-width:100%;height:auto}
.article-body pre{overflow:auto;padding:12px;background:var(--line);border-radius:6px}
.article-body blockquote{margin:0;padding-left:16px;border-left:3px solid var(--line);color:var(--muted)}
.back-link{margin-top:40px}
.site-footer{max-width:720px;margin:0 auto;padding:24px 16px;color:var(--muted);font-size:.85rem;border-top:1px solid var(--line)}
.article-body p{white-space:pre-line}