:root{color-scheme:light;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#29382d;background:#f6f3eb}*{box-sizing:border-box}body{margin:0;padding:0 24px}header,main,footer{max-width:760px;margin:auto}header{padding:32px 0;font-family:serif;font-size:27px;display:flex;justify-content:space-between;align-items:center}header span,.eyebrow,footer{font-family:system-ui,sans-serif;font-size:12px;letter-spacing:.1em;color:#626c62}main{padding:64px 0 40px}h1{font-family:"Songti SC","SimSun",serif;font-size:clamp(42px,8vw,70px);font-weight:400;line-height:1.3;margin:18px 0 28px}.intro{max-width:540px;color:#586156;line-height:1.9}section{margin:42px 0 28px;padding:28px;background:#fffdf7;border-radius:20px}h2{font-size:20px;margin:0 0 12px}section p{line-height:1.7;color:#586156;font-size:14px}.download{display:flex;justify-content:space-between;align-items:center;background:#3d6045;color:white;padding:18px 22px;border-radius:14px;text-decoration:none;font-weight:600;margin:24px 0}.download:hover{background:#304d36}a:focus-visible,summary:focus-visible{outline:3px solid #708b39;outline-offset:5px}.notice{margin-bottom:0}details{border-bottom:1px solid #dadcd2;padding:20px 0}summary{cursor:pointer;font-size:15px}details p{line-height:1.8;font-size:14px;color:#586156}code{display:block;overflow-wrap:anywhere;font-size:12px;line-height:1.8}footer{padding:30px 0 40px;font-size:11px}@media(max-width:500px){header{padding:24px 0}main{padding-top:32px}section{padding:22px}header span{font-size:10px}}