*{box-sizing:border-box}body{margin:0;background:#fafbf7;color:#193e38;font:16px/1.65 system-ui,sans-serif}header,main,footer{max-width:940px;margin:auto;padding:24px}header{display:flex;gap:20px;align-items:center;justify-content:space-between;flex-wrap:wrap;border-bottom:1px solid #d8e3dc}.brand{font-size:26px;font-weight:800;color:#197c70;text-decoration:none}a{color:#157d71;overflow-wrap:anywhere}h1{font-size:clamp(30px,5vw,48px);line-height:1.15;letter-spacing:-1px}h2{font-size:25px;margin-top:36px}section{background:white;border:1px solid #d8e3dc;border-radius:16px;padding:24px;margin:24px 0}.intro{font-size:19px}.notice{background:#edf3e7;border-left:4px solid #e9a16d;padding:18px;border-radius:8px}.btn{display:inline-block;background:#197c70;color:white;padding:13px 20px;text-decoration:none;border-radius:8px;min-height:48px;font-weight:700}footer{font-size:13px;border-top:1px solid #d8e3dc}:focus-visible{outline:3px solid #e9a16d;outline-offset:3px}@media(max-width:600px){header,main,footer{padding:18px}section{padding:18px}.btn{display:block;text-align:center}}