:root{color-scheme:light;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans JP",sans-serif;color:#24352f;background:#f5f7f5;font-size:16px;line-height:1.85}*{box-sizing:border-box}body{margin:0}header,main,footer{width:min(100% - 40px,800px);margin:auto}header{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:28px 0;border-bottom:1px solid #d8e1da}header a{font-size:26px;letter-spacing:-.04em;font-weight:650;text-decoration:none;color:#243e35}header span{font-size:14px;letter-spacing:.06em}main{padding:36px 0 60px}h1{font-size:clamp(28px,5vw,38px);line-height:1.4;letter-spacing:-.035em;margin:14px 0}h2{font-size:21px;line-height:1.5;margin:34px 0 12px}h3{font-size:17px}p{margin:12px 0}a{color:#245f47;text-underline-offset:3px;overflow-wrap:anywhere}summary:focus-visible,a:focus-visible{outline:3px solid #397953;outline-offset:5px}.meta{color:#56685e;font-size:14px}.contact{padding:24px;border:1px solid #ccd8cf;border-radius:14px;background:white;margin:30px 0}ul,ol{padding-left:1.5em}li{margin:10px 0}details{border-bottom:1px solid #d8e1da;padding:18px 0}summary{cursor:pointer;font-weight:600}footer{padding:26px 0 40px;border-top:1px solid #d8e1da;font-size:14px;display:flex;gap:22px;flex-wrap:wrap}hr{border:0;border-top:1px solid #d8e1da;margin:42px 0}@media(max-width:420px){header,main,footer{width:calc(100% - 32px)}header span{font-size:12px}main{padding-top:24px}.contact{padding:18px}}