:root{color-scheme:light;--ink:#1c2420;--muted:#5c6b63;--line:#d5ddd8}
*{box-sizing:border-box}body{margin:0;font:16px/1.5 "Segoe UI",system-ui,sans-serif;background:linear-gradient(180deg,#eef3f0,#f7f9f8);color:var(--ink)}
header,main,footer{max-width:720px;margin:0 auto;padding:1.5rem}
.brand{font-size:1.4rem;font-weight:700;letter-spacing:.04em}
.tag,.meta,footer{color:var(--muted)}main{border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
h1{font-size:1.8rem;margin:0 0 .6rem}footer{font-size:.85rem}