*{box-sizing:border-box}
:root{--ink:#17212b;--sub:#56616d;--bg:#f6f4ef;--card:#fff;--line:#dcd8cf;--acc:#1f5f4a;--acc2:#e8f1ec;--warn:#9a3b1d}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}
main{max-width:640px;margin:0 auto;padding:20px 16px 40px}
.skip{position:absolute;left:-999px}.skip:focus{left:8px;top:8px;background:#fff;padding:8px}
h1{font-size:1.9rem;line-height:1.15;margin:.2em 0 .3em}
h2{font-size:1.2rem;margin:0 0 .6em}h3{font-size:1.05rem;margin:0 0 .4em}
.eyebrow{text-transform:uppercase;letter-spacing:.08em;font-size:.78rem;color:var(--acc);font-weight:700;margin:0}
.lede{font-size:1.05rem;color:var(--sub);margin:0 0 1em}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px 16px;margin:0 0 16px}
fieldset{border:0;padding:0;margin:0 0 14px}
legend{font-weight:700;margin-bottom:6px}
label{display:block;font-size:.92rem;margin:10px 0 4px;color:var(--sub)}
input[type=number],input[type=email]{width:100%;font-size:16px;padding:11px 12px;border:1px solid #b9b4a9;border-radius:8px;background:#fff;color:var(--ink)}
input:focus,button:focus-visible,a:focus-visible{outline:3px solid #8cc4ad;outline-offset:1px}
.radio{display:flex;gap:10px;align-items:flex-start;color:var(--ink);font-size:.95rem;margin:8px 0}
.radio input{margin-top:4px;width:18px;height:18px;flex:none}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font-size:.92rem;cursor:pointer;color:var(--ink)}
.chip.is-on{background:var(--acc2);border-color:var(--acc);color:var(--acc);font-weight:600}
.btn{display:inline-block;width:100%;border:0;border-radius:10px;background:var(--acc);color:#fff;font-size:1rem;font-weight:700;padding:13px 16px;cursor:pointer;min-height:48px}
.btn.ghost{background:#fff;color:var(--acc);border:2px solid var(--acc)}
.btn:disabled{opacity:.6}
.result{margin-top:16px;border-top:1px solid var(--line);padding-top:14px}
.nums{display:grid;gap:8px}
.nums div{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.k{color:var(--sub)}.v{font-size:1.25rem;font-weight:700;font-variant-numeric:tabular-nums}
.save .v{color:var(--acc);font-size:1.6rem}.save.neg .v{color:var(--warn)}
.math{font-size:.85rem;color:var(--sub);background:#faf9f6;border-radius:8px;padding:8px 10px;overflow-wrap:anywhere}
.sub{font-size:.88rem;color:var(--sub)}
.offer .opt{border:1px solid var(--line);border-radius:10px;padding:14px;margin-bottom:12px}
.offer ul{padding-left:1.2em;margin:.3em 0 .9em}
.cap{border-top:1px solid var(--line);padding-top:12px}
.capmsg{background:#fff7e6;border:1px solid #f0d9a8;border-radius:8px;padding:10px 12px}
.row .btn{margin-top:10px}
.ok{background:var(--acc2);border-radius:8px;padding:10px 12px;font-weight:600}
.hide{display:none!important}
footer.small{font-size:.8rem;color:var(--sub)}
footer.small p{margin:.5em 0}
a{color:var(--acc)}
code{font-size:.9em}
@media (min-width:560px){.row{display:flex;gap:10px;align-items:flex-end}.row .grow{flex:1}.row .btn{width:auto;margin-top:0}.btn{width:auto}}