:root{--fg:#1f2328;--muted:#59636e;--bg:#fff;--accent:#0b6bcb;--line:#e5e7eb;--chip:#eef4fb}
@media (prefers-color-scheme:dark){:root{--fg:#e6edf3;--muted:#9da7b3;--bg:#0d1117;--accent:#58a6ff;--line:#30363d;--chip:#16233a}}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:1.0625rem;line-height:1.7;color:var(--fg);background:var(--bg)}
a{color:var(--accent)}
a:hover{text-decoration-thickness:2px}
.wrap{max-width:46rem;margin:0 auto;padding:0 1.25rem}
.site-header{border-bottom:1px solid var(--line)}
.nav{display:flex;justify-content:space-between;align-items:center;padding-top:1rem;padding-bottom:1rem}
.nav a{text-decoration:none}
.brand{font-weight:700;color:var(--fg)}
main{padding-top:2rem;padding-bottom:3rem}
h1{font-size:clamp(1.75rem,4.5vw,2.4rem);line-height:1.2;margin:.5rem 0 .75rem}
h2{font-size:1.45rem;line-height:1.3;margin:2.25rem 0 .5rem}
h3{font-size:1.15rem;margin:1.5rem 0 .4rem}
img{max-width:100%;height:auto}
.cover{display:block;width:100%;border-radius:10px;border:1px solid var(--line);margin-bottom:1rem;background:var(--chip)}
.byline,.meta,.lead{color:var(--muted)}
.tags{list-style:none;display:flex;flex-wrap:wrap;gap:.5rem;padding:0;margin:0 0 1.5rem}
.tag{background:var(--chip);color:var(--fg);border:1px solid var(--line);border-radius:999px;padding:.15rem .75rem;font-size:.85rem}
.content ul{padding-left:1.25rem}
.content li{margin:.3rem 0}
.content em{display:block;border-left:3px solid var(--accent);padding-left:1rem}
.post-footer{border-top:1px solid var(--line);margin-top:2.5rem;padding-top:1rem}
.post-list{list-style:none;padding:0;margin:0}
.post-card{border:1px solid var(--line);border-radius:12px;padding:1rem;margin:1.25rem 0}
.post-card img{display:block;width:100%;border-radius:8px;background:var(--chip)}
.post-card h2{margin:.9rem 0 .25rem;font-size:1.3rem}
.card-link{text-decoration:none;color:var(--fg)}
.card-link:hover h2{color:var(--accent)}
.post-card p{margin:.4rem 0}
.site-footer{border-top:1px solid var(--line);padding:1.25rem 0;color:var(--muted);font-size:.95rem}
@media (max-width:480px){body{font-size:1rem}.wrap{padding:0 1rem}}