:root{--bg:#f7f4ef;--surface:#fffdf9;--surface-muted:#f0ebe3;--text:#2f2a25;--muted:#6f665d;--line:#ded5ca;--accent:#7f5d3b;--accent-strong:#614425;--accent-soft:#efe4d6;--danger-soft:#f8e9e6;--danger-text:#7b3329;--focus:#366d77}*{box-sizing:border-box}html{background:var(--bg);color:var(--text);font-family:Yu Gothic,Hiragino Kaku Gothic ProN,Meiryo,system-ui,sans-serif}body{min-height:100vh;margin:0}button,input,select,textarea{font:inherit}button{cursor:pointer}a.choice-button,a.primary-button,a.secondary-button,a.text-button{text-decoration:none}button:disabled{cursor:not-allowed;opacity:.52}.page{min-height:100vh;padding:32px 16px 56px}.shell{width:min(920px,100%);margin:0 auto}.header{border-bottom:1px solid var(--line);margin-bottom:24px;padding-bottom:18px}.kicker{color:var(--accent-strong);letter-spacing:0;margin:0 0 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