:root{--bg:#f6f7f9;--fg:#1c2128;--muted:#6b7480;--card:#fff;--line:#dde1e6;--accent:#2563eb;--ok:#15803d;--warn:#b45309;--bad:#b91c1c}
@media (prefers-color-scheme:dark){:root{--bg:#0f1317;--fg:#e6e9ee;--muted:#98a2b0;--card:#181d23;--line:#2a323b;--accent:#6ea0ff;--ok:#4ade80;--warn:#fbbf24;--bad:#f87171}}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.55 system-ui,-apple-system,"Apple SD Gothic Neo","Noto Sans KR",sans-serif}
header,main{max-width:720px;margin:0 auto;padding:0 16px}
header{padding-top:20px}h1{margin:0;font-size:1.4rem}.sub{margin:.2rem 0 1rem;color:var(--muted)}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:14px}
h2{font-size:1rem;margin:18px 0 8px}
.row{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin:8px 0}
label{display:flex;gap:6px;align-items:center;color:var(--muted);font-size:.9rem}
select,button,textarea{font:inherit;color:var(--fg);background:var(--card);border:1px solid var(--line);border-radius:8px;padding:8px 12px}
select{max-width:100%}
button{cursor:pointer}button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
button.rec{background:var(--bad);border-color:var(--bad);color:#fff}
textarea{width:100%;margin:8px 0;resize:vertical}
.muted,.hint{color:var(--muted);font-size:.9rem}.q{font-size:1.1rem;font-weight:600;margin:.4rem 0}
.tag{background:var(--line);border-radius:6px;padding:2px 8px;font-size:.8rem;margin-right:8px}
.frame{padding-left:1.3rem}.frame li{margin:4px 0}
.timer{font-variant-numeric:tabular-nums;font-weight:600}
.stats{list-style:none;padding:0;margin:0}.stats li{display:flex;justify-content:space-between;gap:10px;padding:6px 0;border-bottom:1px solid var(--line)}
.ok{color:var(--ok)}.warn{color:var(--warn)}.bad{color:var(--bad)}
.verdict{font-weight:600}
#model p{margin:.35rem 0}#model .ko{color:var(--muted);font-size:.9rem}
#hist{padding-left:1.1rem}#hist li{margin:4px 0;font-size:.9rem}
.switch-ver{float:right;margin-top:4px;padding:6px 12px;border:1px solid var(--line);border-radius:8px;font-size:.85rem;text-decoration:none;color:var(--fg);background:var(--card)}
.chips{display:flex;flex-wrap:wrap;gap:6px}.chip{border:1px solid var(--line);border-radius:8px;padding:4px 10px;font-size:.9rem}.chip small{color:var(--muted);margin-left:6px}.chips.hide small{display:none}
button.small{padding:2px 8px;font-size:.8rem;margin-left:8px}.up{margin:4px 0;padding-left:1.1rem;font-size:.9rem}
.flip{min-height:180px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;text-align:center;border:1px solid var(--line);border-radius:12px;padding:20px;cursor:pointer;user-select:none}
.big{font-size:1.6rem;font-weight:700}.tiny{font-size:.8rem}