:root{--fg:#1b1f24;--muted:#57606a;--bg:#f6f8fa;--card:#fff;--line:#d0d7de;--blue:#1d4ed8;--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 4px}
h2{font-size:1.0625rem;margin:0 0 8px}h3{font-size:1rem;margin:12px 0 4px}
.lead{color:var(--muted);margin:0 0 16px}
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}
.hint{font-weight:400;color:var(--muted);font-size:.875rem}
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}
.chk,.tool-card .chk{display:flex;align-items:center;gap:10px;font-weight:400;min-height:44px}
.chk input[type=checkbox],.tool-card .chk input[type=checkbox]{width:22px;min-height:22px;height:22px;flex:none}
.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:1.75rem;font-weight:800;line-height:1.15;margin:4px 0 10px;color:var(--blue)}
.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}
a{color:var(--blue);overflow-wrap:anywhere}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:8px}
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 thead th{font-weight:700;color:var(--fg);text-align:right}
table.tax tr.total th,table.tax tr.total td{font-weight:800;color:var(--fg);border-bottom:2px solid var(--line)}
table.tax td.big{font-size:1.15rem;margin:0;line-height:1.4}
table.tax tr.why td{text-align:left;padding:0 4px 8px}
table.tax details summary{cursor:pointer;color:var(--blue);font-size:.85rem;min-height:28px}
table.tax details p{margin:4px 0;font-size:.85rem;color:var(--muted);text-align:left;overflow-wrap:anywhere}
ul.sc{list-style:none;padding:0;margin:8px 0}
ul.sc li{display:flex;flex-wrap:wrap;gap:6px 8px;align-items:center;padding:6px 0;border-bottom:1px solid #eef0f3}
ul.sc button{min-height:40px;padding:4px 10px;font-size:.9rem}
.filebtn{display:flex;align-items:center;justify-content:center;min-height:48px;border:1px solid var(--line);border-radius:8px;background:#fff;font-weight:400;cursor:pointer;margin:0}
.filebtn input{position:absolute;opacity:0;width:1px;min-height:1px;height:1px}
.tool-out .warn{margin-top:8px}