:root{font-family:"Hiragino Sans","Yu Gothic",sans-serif;color:#183229;background:linear-gradient(145deg,#f2f8f4,#fff9eb)}*{box-sizing:border-box}body{margin:0;min-height:100vh}.shell{max-width:820px;margin:auto;padding:72px 24px}.eyebrow{color:#31735d;font-weight:700;letter-spacing:.16em}.step{display:inline-block;background:#e3f1e9;color:#245f4b;border-radius:999px;padding:8px 14px}h1{font-size:clamp(2.7rem,9vw,5.4rem);line-height:1.05;margin:.35em 0;color:#123d30}.lead{font-size:1.15rem;line-height:1.9;max-width:620px}button{margin-top:28px;padding:16px 26px;border:0;border-radius:12px;background:#cdd8d2;color:#52675f;font-size:1rem;font-weight:700}.note{margin-top:18px;color:#63776f;font-size:.9rem}