:root{--bg:#f8fafc;--card:#ffffff;--text:#0f172a;--muted:#64748b;--line:#e2e8f0;--primary:#0f172a;--accent:#eef2ff;--good:#ecfdf5;--good-b:#10b981;--bad:#fef2f2;--bad-b:#ef4444;--warn:#fff7ed;--warn-b:#f59e0b}
*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans KR",sans-serif}
body{padding-bottom:92px}.app{max-width:760px;margin:0 auto;padding:16px}.card{background:var(--card);border:1px solid var(--line);border-radius:24px;padding:16px;box-shadow:0 8px 24px rgba(15,23,42,.05)}.stack{display:flex;flex-direction:column;gap:12px}.hero h1{margin:6px 0 8px;font-size:28px}.muted{color:var(--muted);line-height:1.55}.eyebrow{font-size:12px;color:var(--muted)}
.row{display:flex;gap:8px;flex-wrap:wrap}.grid{display:grid;gap:10px}.rounds{grid-template-columns:repeat(4,minmax(0,1fr))}.subjects{grid-template-columns:repeat(3,minmax(0,1fr))}.stats{grid-template-columns:repeat(4,minmax(0,1fr))}.btn,.chip,.subject,.num{border:none;border-radius:18px;background:#fff;padding:12px 14px;cursor:pointer;font-weight:700;color:var(--text);border:1px solid var(--line)}.btn.primary{background:var(--primary);color:#fff}.btn.secondary{background:#fff}.btn.small{padding:10px 12px;border-radius:14px;font-size:13px}.chip.active,.subject.active,.num.active{background:var(--primary);color:#fff;border-color:var(--primary)}.subject.disabled{opacity:.45;cursor:not-allowed}.meta{display:flex;justify-content:space-between;align-items:center;gap:8px}.badge{display:inline-flex;align-items:center;padding:7px 10px;border-radius:999px;border:1px solid var(--line);font-size:12px;font-weight:700}.badge.warn{background:var(--warn);border-color:#fed7aa;color:#9a3412}.badge.good{background:var(--good);border-color:#a7f3d0;color:#065f46}.badge.bad{background:var(--bad);border-color:#fecaca;color:#991b1b}
.stat{padding:12px;border-radius:18px;background:#f8fafc;border:1px solid var(--line)}.stat .label{font-size:12px;color:var(--muted)}.stat .value{font-size:16px;font-weight:800;margin-top:4px}.progress{height:10px;background:#e2e8f0;border-radius:999px;overflow:hidden}.fill{height:100%;background:var(--primary)}
.qtitle{font-size:20px;line-height:1.5;font-weight:800}.qscroll{max-height:180px;overflow:auto;background:#fafafa;border:1px solid var(--line);padding:14px;border-radius:18px;line-height:1.7}.choices{display:flex;flex-direction:column;gap:10px}.choice{display:flex;gap:12px;align-items:flex-start;text-align:left;padding:14px;border-radius:18px;border:1px solid var(--line);background:#fff;cursor:pointer}.choice.selected{border-color:#334155;background:#f8fafc}.choice.correct{background:var(--good);border-color:#a7f3d0}.choice.wrong{background:var(--bad);border-color:#fecaca}.clabel{font-weight:800;min-width:22px}.ctext{line-height:1.6;white-space:pre-wrap}.result{padding:14px;border-radius:18px;border:1px solid var(--line);line-height:1.6}.result.good{background:var(--good);border-color:#a7f3d0}.result.bad{background:var(--bad);border-color:#fecaca}.warnbox{padding:12px;border-radius:16px;background:var(--warn);border:1px solid #fed7aa;color:#9a3412;line-height:1.5}.bottom{position:fixed;left:0;right:0;bottom:0;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-top:1px solid var(--line)}.bottom .inner{max-width:760px;margin:0 auto;padding:12px 16px;display:grid;grid-template-columns:1fr 1.2fr 1fr;gap:8px}.nums{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:8px}.num{padding:12px 0;text-align:center}.num.good{background:var(--good);border-color:#a7f3d0}.num.bad{background:var(--bad);border-color:#fecaca}.table{display:flex;flex-direction:column;gap:8px}.item{display:flex;justify-content:space-between;gap:10px;padding:12px;border:1px solid var(--line);border-radius:16px;background:#fff}.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px}.center{text-align:center}.hidden{display:none}
@media (max-width:640px){.app{padding:12px}.hero h1{font-size:24px}.rounds,.subjects,.stats{grid-template-columns:repeat(2,minmax(0,1fr))}.bottom .inner{grid-template-columns:1fr 1.2fr}.bottom .inner .wide{grid-column:1/-1}.nums{grid-template-columns:repeat(4,minmax(0,1fr))}}

.btn[disabled]{opacity:.45;cursor:not-allowed}