:root{
  --ink:#12262b; --paper:#eaf0ef; --panel:#ffffff; --line:#c6d4d2;
  --teal:#0e5a5a; --amber:#b7791f; --muted:#52666a;
}
@media (prefers-color-scheme:dark){
  :root{--ink:#e6efee; --paper:#0f1c1f; --panel:#16282c; --line:#2c4247; --teal:#5fc4bd; --amber:#e0a84a; --muted:#9bb0b3}
}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.7 "Noto Sans TC",system-ui,-apple-system,"PingFang TC","Microsoft JhengHei",sans-serif}
header,main,footer{max-width:960px;margin:0 auto;padding:0 20px}
header{padding-top:40px}
h1{font:900 clamp(2rem,6vw,3.2rem)/1.15 "Noto Serif TC",serif;margin:0 0 8px;letter-spacing:.02em}
header p{margin:0 0 20px;color:var(--muted)}
.tabs{display:flex;gap:0;border-bottom:2px solid var(--line);flex-wrap:wrap}
.tabs button{font:inherit;font-weight:700;background:none;border:0;padding:12px 20px;color:var(--muted);cursor:pointer;border-bottom:4px solid transparent;margin-bottom:-2px}
.tabs button[aria-selected=true]{color:var(--teal);border-bottom-color:var(--amber)}
button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:3px solid var(--amber);outline-offset:2px}
main{display:grid;grid-template-columns:minmax(0,340px) minmax(0,1fr);gap:32px;padding-top:28px;padding-bottom:32px}
@media(max-width:760px){main{grid-template-columns:1fr}}
form{display:grid;gap:16px;align-content:start}
label{display:grid;gap:4px;font-weight:500;font-size:.95rem}
input,select{font:inherit;padding:10px 12px;border:1px solid var(--line);border-radius:6px;background:var(--panel);color:var(--ink);width:100%}
.hint{font-weight:400;font-size:.8rem;color:var(--muted)}
.out{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:24px;min-width:0}
.label{margin:0;color:var(--muted)}
.big{font:900 clamp(2.2rem,7vw,3.6rem)/1.2 "Noto Serif TC",serif;margin:4px 0 8px;color:var(--teal);word-break:break-all;font-variant-numeric:tabular-nums}
.note{margin:0 0 16px;color:var(--amber);min-height:1.5em}
.break{display:grid;gap:8px;margin-bottom:20px}
.row{display:flex;justify-content:space-between;gap:12px;padding:8px 0;border-bottom:1px solid var(--line)}
.row span:last-child{font-variant-numeric:tabular-nums;font-weight:700}
.scroll{overflow-x:auto;max-height:360px;overflow-y:auto}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;font-size:.9rem}
th,td{text-align:right;padding:8px 10px;border-bottom:1px solid var(--line);white-space:nowrap}
th:first-child,td:first-child{text-align:left}
th{position:sticky;top:0;background:var(--panel);color:var(--muted);font-weight:500}
footer{padding-bottom:48px;color:var(--muted);font-size:.9rem}
summary{cursor:pointer;font-weight:700}