:root{--color-background: #ffffff;--color-text: #333333;--color-primary: #FF7000;--color-kakao: #FEE500;--color-kakao-text: #000000;--color-naver: #03C75A;--color-naver-text: #ffffff;--color-border: #eeeeee}*{margin:0;padding:0;box-sizing:border-box}body{margin:0;padding:0;font-family:Inter,Noto Sans KR,sans-serif;background-color:var(--color-background);color:var(--color-text);min-height:100vh}#app{width:100%;margin:0 auto;text-align:center}button{cursor:pointer;border:none;border-radius:8px;padding:10px 20px;font-size:1rem;font-weight:600;transition:transform .1s ease,opacity .2s ease}button:hover{opacity:.9;transform:scale(1.02)}button:active{transform:scale(.98)}