:root{--ink:#1a1a1a;--muted:#6b6b6b;--line:#e8e8e4;--bg:#fdfdfb;--accent:#24466b;--accent-bright:#3a8bd0;--accent-soft:#e9f1f9}
*{margin:0;padding:0;box-sizing:border-box}
body{font-family:"Helvetica Neue",Helvetica,Arial,sans-serif;color:var(--ink);background:var(--bg);line-height:1.7;-webkit-font-smoothing:antialiased}
.wrap{max-width:720px;margin:0 auto;padding:0 24px}
nav{position:sticky;top:0;z-index:10;background:rgba(253,253,251,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:64px}
.logo{font-weight:700;font-size:1.05rem;text-decoration:none;color:var(--ink)}
.back{color:var(--muted);text-decoration:none;font-size:.92rem}
.back:hover{color:var(--ink)}
article{padding:64px 0 60px}
h1{font-size:clamp(1.8rem,4.5vw,2.5rem);line-height:1.15;letter-spacing:-.02em;margin-bottom:18px}
.post-meta{color:var(--muted);font-size:.88rem;margin-bottom:36px}
.tag{display:inline-block;background:var(--accent-soft);color:var(--accent);font-size:.75rem;font-weight:600;padding:3px 10px;border-radius:100px;margin-right:6px;white-space:nowrap}
article h2{font-size:1.4rem;margin:40px 0 14px;letter-spacing:-.01em}
article h3{font-size:1.15rem;margin:32px 0 12px}
article p{margin-bottom:16px;color:#2c2c2c}
article ul,article ol{margin:0 0 16px 24px}
article li{margin-bottom:6px}
article img{max-width:100%;border-radius:8px;margin:8px 0}
.img-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin:12px 0 20px}
.img-row img{width:100%;height:auto;margin:0}
article a{color:var(--accent)}
pre{background:#f4f4f0;border:1px solid var(--line);border-radius:8px;padding:14px 16px;font-size:.88rem;overflow-x:auto;margin:0 0 16px;white-space:pre-wrap}
.caption{display:block;font-size:.85rem;color:var(--muted);margin:-4px 0 16px;font-style:italic}
footer{border-top:1px solid var(--line);padding:32px 0}
.foot-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.85rem;color:var(--muted)}
.foot-inner a{color:var(--muted);text-decoration:none}