:root{--main:#3F5F68;--gold:#C7A96B;--dark:#1C272B;--bg:#F5F2EA;--soft:#E9EEE9;--text:#252B2D;--muted:#6C7779;--accent:#D66A4A}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,"Microsoft Yahei",sans-serif;line-height:1.8}header{background:var(--dark);padding:18px 5%;display:flex;justify-content:space-between;gap:20px}header a{color:#fff;text-decoration:none}main{max-width:1100px;margin:auto;padding:30px}section,article{background:var(--soft);padding:20px;margin:18px 0;border-radius:12px}img{max-width:100%;display:block}h1{color:var(--main)}footer{padding:25px;text-align:center;background:var(--dark);color:#fff}@media(max-width:700px){header{display:block}nav a{display:inline-block;margin:8px}main{padding:15px}}