:root{--bg:#0f1419;--panel:#171e26;--line:#26303b;--text:#e6ebf0;--muted:#9aa7b4;--accent:#5eb5a0;--accent-ink:#06201a}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--accent)}
.wrap{max-width:46rem;margin:0 auto;padding:0 1rem}
.top{border-bottom:1px solid var(--line)}
.top .wrap{display:flex;flex-wrap:wrap;gap:.5rem 1.25rem;align-items:center;padding-top:.75rem;padding-bottom:.75rem}
.brand{font-weight:700;color:var(--text);text-decoration:none}
nav{display:flex;flex-wrap:wrap;gap:.25rem 1rem}
nav a{color:var(--muted);text-decoration:none;font-size:.95rem}
nav a:hover,nav a[aria-current]{color:var(--text)}
h1{font-size:1.75rem;line-height:1.25;margin:1.5rem 0 .5rem}
h2{font-size:1.25rem;margin:2rem 0 .5rem}
.lead{color:var(--muted);font-size:1.05rem}
.calc{background:var(--panel);border:1px solid var(--line);border-radius:.75rem;padding:1rem;margin:1.25rem 0}
.fields{display:grid;grid-template-columns:1fr;gap:.9rem}
.field label{display:block;font-size:.9rem;color:var(--muted);margin-bottom:.25rem}
.pair{display:flex;align-items:center;gap:.4rem}
.pair span{color:var(--muted)}
input,select,button{font:inherit;color:var(--text);background:var(--bg);border:1px solid var(--line);border-radius:.5rem;padding:.55rem .65rem;min-height:2.75rem}
input,select{width:100%}
input:focus,select:focus,button:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.pair input{min-width:0}
button{margin-top:1rem;background:var(--accent);color:var(--accent-ink);border-color:var(--accent);font-weight:600;cursor:pointer;padding:.55rem 1.25rem}
.result{margin-top:1rem;border-top:1px solid var(--line);padding-top:.75rem}
dl{margin:0}
dl>div{display:flex;flex-wrap:wrap;justify-content:space-between;gap:.25rem 1rem;padding:.4rem 0;border-bottom:1px solid var(--line)}
dl>div:last-child{border-bottom:0}
dt{color:var(--muted)}
dd{margin:0;font-weight:600;text-align:right}
.note{font-size:.875rem;color:var(--muted);margin:.75rem 0 0}
.cap{color:var(--muted);font-size:.9rem;margin:1rem 0 .25rem}
details{border:1px solid var(--line);border-radius:.5rem;margin:.5rem 0;padding:0 .9rem}
summary{cursor:pointer;padding:.7rem 0;font-weight:600}
details p{margin:0 0 .8rem}
.cards{list-style:none;margin:1.25rem 0;padding:0;display:grid;gap:.75rem}
.cards a{display:block;background:var(--panel);border:1px solid var(--line);border-radius:.75rem;padding:1rem;color:var(--text);text-decoration:none}
.cards a:hover{border-color:var(--accent)}
.cards span{display:block;color:var(--muted);font-size:.95rem;margin-top:.25rem}
footer{border-top:1px solid var(--line);margin-top:3rem;padding:1.25rem 0 2rem}
[hidden]{display:none!important}
@media(min-width:40rem){.fields{grid-template-columns:1fr 1fr}.field.wide{grid-column:1/-1}.cards{grid-template-columns:1fr 1fr}h1{font-size:2.1rem}}
.tablewrap{overflow-x:auto;margin:.25rem 0 1rem;border:1px solid var(--line);border-radius:.5rem}
table{border-collapse:collapse;width:100%;font-size:.95rem}
th,td{padding:.45rem .75rem;text-align:left;border-bottom:1px solid var(--line);white-space:nowrap}
thead th{color:var(--muted);font-weight:600}
tbody tr:last-child th,tbody tr:last-child td{border-bottom:0}
tbody th{font-weight:600}
.related{display:grid;grid-template-columns:1fr;gap:.35rem .75rem;margin-top:2rem}
.related h2{grid-column:1/-1;margin:0 0 .25rem}
.related ul{display:contents;list-style:none;margin:0;padding:0}
.related li{margin:0}
.related a{font-size:.95rem}
@media(min-width:40rem){.related{grid-template-columns:1fr 1fr}}
.result:empty{display:none}
.choices{display:grid;grid-template-columns:repeat(auto-fit,minmax(13rem,1fr));gap:.75rem;margin:1.25rem 0}
.choice{display:flex;align-items:center;justify-content:space-between;gap:.75rem;padding:.95rem 1rem;background:var(--panel);border:2px solid var(--accent);border-radius:.75rem;color:var(--text);font-weight:600;text-decoration:none}
.choice::after{content:"\2192";color:var(--accent)}
.choice:hover,.choice:focus-visible{background:var(--accent);color:var(--accent-ink)}
.choice:hover::after,.choice:focus-visible::after{color:var(--accent-ink)}