:root{font-family:'Hiragino Kaku Gothic ProN','Yu Gothic',system-ui,sans-serif;color:#e9f0e7;background:#101f25;font-synthesis:none;--mint:#bdebc8;--gold:#eec575}*{box-sizing:border-box}body{margin:0;background:radial-gradient(ellipse at 80% 0,#29494180,transparent 60%)}main{max-width:1000px;margin:auto;padding:22px 25px 40px}a{color:inherit}header{display:flex;align-items:center;gap:16px;font-size:12px}header a{text-decoration:none}header span{margin-left:auto;letter-spacing:.13em;color:#97aea2}button{font:inherit;font-weight:700;cursor:pointer;border:1px solid #607e72;border-radius:10px;padding:11px 16px;min-height:44px;background:#243b3e;color:#eff8ee;touch-action:manipulation}button:disabled{opacity:.32;cursor:default}button:focus-visible,a:focus-visible{outline:3px solid var(--gold);outline-offset:4px}button:active:not(:disabled){transform:translateY(2px)}header button{font-size:12px;padding:5px 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