:root{color-scheme:light;font-family:system-ui,-apple-system,"Noto Sans JP",sans-serif;color:#20332d;background:#f6f8f5;line-height:1.9}*{box-sizing:border-box}body{margin:0}header,main,footer{max-width:880px;margin:auto;padding:28px 24px}header{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;border-bottom:1px solid #d8e1db}header>a{font-size:24px;font-weight:750;text-decoration:none}a{color:#21644c;text-underline-offset:4px}nav{display:flex;gap:18px;flex-wrap:wrap;font-size:14px}main{padding-top:52px;padding-bottom:64px}h1{font-size:clamp(28px,5vw,40px);line-height:1.45;margin:12px 0 24px}h2{font-size:21px;line-height:1.6;margin-top:34px}p,li{overflow-wrap:anywhere}.tag{color:#376d54;font-size:14px;letter-spacing:.08em}.lead{font-size:19px}.notice{background:#e8f0e9;border-left:4px solid #548269;padding:16px 20px;border-radius:4px}.meta,footer{font-size:14px;color:#52675c}footer{border-top:1px solid #d8e1db}a:focus-visible{outline:3px solid #b66a16;outline-offset:5px}li+li{margin-top:8px}@media(max-width:540px){header,main,footer{padding-left:20px;padding-right:20px}main{padding-top:32px}nav{gap:12px}}