:root{--fg:#1b1f24;--muted:#57606a;--bg:#f6f8fa;--card:#fff;--line:#d0d7de;--blue:#0f766e;--green:#1a7f37;--amber:#9a6700;--red:#cf222e}
*{box-sizing:border-box}
html{color-scheme:light}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.6 system-ui,-apple-system,"Apple SD Gothic Neo","Noto Sans KR",sans-serif}
main{max-width:640px;margin:0 auto;padding:20px 16px 48px}
h1{font-size:1.5rem;margin:0 0 6px;line-height:1.35}
h2{font-size:1.0625rem;margin:0 0 8px}h3{font-size:1rem;margin:16px 0 6px}
.lead{color:var(--muted);margin:8px 0 16px}
.badge{display:inline-block;background:#e6f4f1;border:1px solid #99d5cc;color:#0b5c55;border-radius:999px;padding:4px 10px;font-size:.8rem;margin:0 0 8px}
form{display:grid;gap:6px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
label{font-weight:600;margin-top:6px;display:block}
.hint{font-weight:400;color:var(--muted);font-size:.85rem}
input,select{width:100%;min-height:48px;padding:10px 12px;font-size:1rem;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--fg)}
button{min-height:48px;padding:10px 14px;font-size:1rem;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--fg);cursor:pointer}
button.primary{margin-top:10px;background:var(--blue);border-color:var(--blue);color:#fff;font-weight:700}
.error,.tool-err{color:var(--red);margin:4px 0 0;min-height:1.2em}
.card{margin-top:16px;background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px}
[hidden]{display:none!important}
.big{font-size:1.65rem;font-weight:800;line-height:1.2;margin:4px 0 6px;color:var(--blue);overflow-wrap:anywhere}
.actions{display:grid;gap:8px;margin-top:16px}
.toast{color:var(--green);min-height:1.2em;margin:6px 0}
.small{font-size:.875rem;color:var(--muted)}
.warn{color:var(--amber);font-size:.9rem;margin:8px 0 0}
.ok{color:var(--green);font-size:.9rem;margin:8px 0 0}
a{color:var(--blue);overflow-wrap:anywhere}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:4px}
table.tax{width:100%;border-collapse:collapse;font-size:.95rem;min-width:0}
.tw table.tax{min-width:0}
table.tax th,table.tax td{border:0;border-bottom:1px solid #eef0f3;padding:8px 4px;text-align:right;background:transparent}
table.tax th{text-align:left;font-weight:500;color:var(--muted)}
table.tax tr.total th,table.tax tr.total td{font-weight:800;color:var(--fg);border-bottom:2px solid var(--line)}
.alts{list-style:none;padding:0;margin:8px 0}
.alt{display:grid;grid-template-columns:1fr;gap:2px;padding:10px 0;border-bottom:1px solid #eef0f3}
.alt-label{font-size:.875rem;color:var(--muted)}
.alt-val{font-weight:700;font-size:1.05rem}
.alt-diff{font-size:.875rem;font-weight:600}
.alt-diff.up{color:var(--green)}.alt-diff.down{color:var(--red)}
details.more{margin-top:10px;border:1px solid var(--line);border-radius:8px;padding:8px 12px}
details.more summary{cursor:pointer;font-weight:600;min-height:32px}
.tool-card .chk{display:flex;align-items:center;gap:10px;font-weight:400;min-height:44px}
@media(max-width:420px){main h1{font-size:1.35rem}.grid2{grid-template-columns:1fr}}