:root{--bg:#0b0d12;--fg:#e8eaf0;--mute:#8b90a0;--line:#232735;--accent:#8ab4ff}
*{box-sizing:border-box}
body{margin:0;background:radial-gradient(60rem 40rem at 50% 0,#1a2140 0,var(--bg) 60%) fixed;color:var(--fg);font:16px/1.7 system-ui,-apple-system,"Apple SD Gothic Neo","Noto Sans KR",sans-serif}
a{color:var(--accent)}
header,main,footer{max-width:720px;margin:0 auto;padding:0 20px}
header{padding-top:20px}
.hero{min-height:80vh;display:flex;align-items:center;justify-content:center}
.card{width:100%;max-width:420px;background:#ffffff0a;border:1px solid var(--line);border-radius:20px;padding:28px;text-align:center;backdrop-filter:blur(8px)}
h1{font-size:1.4rem;margin:0 0 4px}
.sub{color:var(--mute);margin:0 0 20px;font-size:.9rem}
input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--line);background:#0006;color:var(--fg);font:inherit}
input:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
#out{margin:20px 0 0;min-height:240px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:var(--mute)}
canvas{background:#fff;border-radius:12px;padding:10px;width:220px;height:220px}
button{padding:10px 20px;border-radius:999px;border:0;background:var(--accent);color:#0b0d12;font:inherit;font-weight:600;cursor:pointer}
article{padding:40px 0}
h2{font-size:1.15rem;margin-top:2em}
.ad{margin:48px 0}
footer{padding:32px 20px;color:var(--mute);font-size:.85rem;border-top:1px solid var(--line);display:flex;gap:16px;flex-wrap:wrap}