:root{--ink:#1d1d1f;--sub:#5f5f63;--line:#deded9;--paper:#f5f5f2;--accent:#c8321f;--link:#1f4fa8;--font:"Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "YuGothic", Meiryo, system-ui, sans-serif}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:72px}body{color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased;background:#fff;margin:0;overflow-x:hidden}img{max-width:100%}a{color:inherit}.btn{border:2px solid var(--ink);min-height:52px;font:inherit;cursor:pointer;border-radius:999px;justify-content:center;align-items:center;padding:0 32px;font-size:16px;font-weight:700;text-decoration:none;transition:transform .15s,background .15s;display:inline-flex}.btn:hover{transform:translateY(-1px)}.btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}.btn.pri{background:var(--ink);color:#fff}.btn.sec{color:var(--ink);background:#fff}.btn.sm{min-height:44px;padding:0 22px;font-size:15px}.btn:disabled{opacity:.6;cursor:default}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}.btn{transition:none}}