*,:after,:before{box-sizing:border-box;margin:0;padding:0}:root{--color-bg:#ffffff;--color-text:#1a1a1a;--color-muted:#666666;--color-accent:#0066cc;--color-border:#e5e5e5;--max-width:720px}@media (prefers-color-scheme:dark){:root{--color-bg:#111111;--color-text:#e5e5e5;--color-muted:#999999;--color-accent:#4d9fff;--color-border:#333333}}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,sans-serif;background:var(--color-bg);color:var(--color-text);line-height:1.7;-webkit-font-smoothing:antialiased}header nav{display:flex;justify-content:space-between;align-items:center;max-width:var(--max-width);margin:0 auto;padding:1.5rem 1rem;border-bottom:1px solid var(--color-border)}.logo{font-size:1.25rem;font-weight:700;text-decoration:none;color:var(--color-text)}.nav-links{display:flex;gap:1.5rem}.nav-links a{text-decoration:none;color:var(--color-muted);font-size:.9rem}.nav-links a:hover{color:var(--color-accent)}footer,main{max-width:var(--max-width);margin:0 auto;padding:2rem 1rem}footer{border-top:1px solid var(--color-border);color:var(--color-muted);font-size:.85rem}h1{font-size:2rem;line-height:1.2}h1,h2{margin-bottom:.5rem}h2{font-size:1.5rem;line-height:1.3}a{color:var(--color-accent)}.post-card{padding:1.5rem 0;border-bottom:1px solid var(--color-border)}.post-card h2 a{text-decoration:none;color:var(--color-text)}.post-card h2 a:hover{color:var(--color-accent)}.post-meta{font-size:.85rem;margin-bottom:.5rem}.post-excerpt,.post-meta{color:var(--color-muted)}.subscribe-form{display:flex;gap:.5rem;margin-top:1rem;flex-wrap:wrap}.subscribe-form input{flex:1 1;min-width:200px;padding:.75rem 1rem;border:1px solid var(--color-border);border-radius:6px;font-size:1rem;background:var(--color-bg);color:var(--color-text)}.subscribe-form button{padding:.75rem 1.5rem;background:var(--color-accent);color:#fff;border:none;border-radius:6px;font-size:1rem;cursor:pointer}.subscribe-form button:hover{opacity:.9}article img{max-width:100%;height:auto;border-radius:8px;margin:1.5rem 0}article{line-height:1.8}article p{margin-bottom:1.25rem}