:root{color-scheme:light;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;color:#25443e;background:#f4f7f4;line-height:1.7}*{box-sizing:border-box}body{margin:0}main{max-width:860px;margin:36px auto;padding:32px;background:#fff;border:1px solid #dce6de;border-radius:20px}nav,footer{display:flex;flex-wrap:wrap;gap:12px 24px}nav{padding-bottom:20px;border-bottom:1px solid #dce6de}a{color:#176b59;text-underline-offset:4px}h1,h2,h3{line-height:1.3;color:#205b4e}h1{font-size:clamp(1.7rem,5vw,2.4rem)}h2{margin-top:36px}p,li{overflow-wrap:anywhere}.summary{font-size:1.12rem}.notice{padding:16px 20px;border-left:4px solid #54816e;background:#eef5ef;border-radius:4px}.formula{font-weight:600;background:#eef5ef;padding:12px 16px;border-radius:8px}section[lang=en]{border-top:1px solid #dce6de;margin-top:36px;padding-top:8px}footer{border-top:1px solid #dce6de;margin-top:32px;padding-top:20px;font-size:.92rem}@media(max-width:600px){main{margin:12px;padding:20px;border-radius:14px}}