:root{
  --bg:#f6f4ee;--surface:#ffffff;--ink:#14231c;--muted:#5d6b64;--line:#e3e0d5;
  --accent:#0f6b4a;--accent-2:#0a4d35;--accent-soft:#e3f1ea;--gold:#b8892b;
  --neg:#9a3b2e;--pos:#0f6b4a;--radius:18px;--shadow:0 1px 2px rgba(20,35,28,.05),0 12px 32px rgba(20,35,28,.07);
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0e1612;--surface:#16211b;--ink:#eef3ef;--muted:#9bada3;--line:#263429;
    --accent:#49c48f;--accent-2:#2fa475;--accent-soft:#1a2b23;--gold:#e0b45a;--neg:#e58a7c;--pos:#49c48f;
    --shadow:0 1px 2px rgba(0,0,0,.3),0 12px 32px rgba(0,0,0,.35)}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;overflow-x:hidden}
.wrap{max-width:880px;margin:0 auto;padding:0 16px 56px}
h1,h2,h3{line-height:1.2;margin:0}
a{color:var(--accent)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

.hero{padding:36px 0 8px;text-align:center}
.eyebrow{display:inline-block;font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);background:var(--accent-soft);padding:5px 12px;border-radius:99px}
.hero h1{font-size:clamp(1.9rem,6vw,2.8rem);margin:14px 0 6px;letter-spacing:-.02em}
.hero .lead{color:var(--muted);margin:0 auto 18px;max-width:560px}
.result{background:linear-gradient(145deg,var(--accent-2),var(--accent));color:#fff;border-radius:24px;padding:26px 18px;box-shadow:var(--shadow)}
.result .lbl{font-size:.85rem;opacity:.85;text-transform:uppercase;letter-spacing:.06em}
.result .big{font-size:clamp(2.4rem,11vw,3.9rem);font-weight:800;letter-spacing:-.03em;line-height:1.1;margin:4px 0;word-break:break-word}
.result .sub{opacity:.9;font-size:.95rem}
.seg{display:flex;gap:6px;flex-wrap:wrap;justify-content:center;margin-top:16px}
.seg button{font:inherit;font-weight:600;font-size:.9rem;border:1px solid rgba(255,255,255,.35);background:rgba(255,255,255,.1);color:#fff;border-radius:99px;padding:8px 16px;cursor:pointer;min-height:40px}
.seg button.on{background:#fff;color:var(--accent-2);border-color:#fff}

.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 16px;margin-top:20px;box-shadow:var(--shadow)}
.card h2{font-size:1.25rem;margin-bottom:14px}
.grid{display:grid;gap:16px;grid-template-columns:1fr}
@media(min-width:640px){.grid.two{grid-template-columns:1fr 1fr}.card{padding:24px}}
.field label,.field .fl{display:block;font-weight:600;font-size:.9rem;margin-bottom:6px}
.field small{display:block;color:var(--muted);font-size:.8rem;margin-top:4px}
.input{display:flex;align-items:center;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);padding:0 12px;min-height:48px}
.input:focus-within{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-soft)}
.input input{flex:1;min-width:0;border:0;background:transparent;font:inherit;font-size:1.05rem;color:var(--ink);padding:10px 0;outline:0}
.input span{color:var(--muted);font-weight:600;margin-left:6px}
.btns{display:flex;flex-wrap:wrap;gap:8px}
.btns button{font:inherit;font-size:.9rem;font-weight:600;color:var(--ink);background:var(--bg);border:1.5px solid var(--line);border-radius:12px;padding:10px 14px;cursor:pointer;min-height:44px;flex:1 1 calc(50% - 8px)}
.btns.three button{flex:1 1 calc(33% - 8px)}
.btns button.on{background:var(--accent);border-color:var(--accent);color:#fff}
.switch{display:flex;align-items:flex-start;gap:12px;padding:12px;border:1.5px solid var(--line);border-radius:12px;background:var(--bg);cursor:pointer}
.switch input{width:20px;height:20px;margin-top:2px;accent-color:var(--accent);flex:none}
.switch b{display:block;font-size:.95rem}
.switch small{color:var(--muted);font-size:.8rem;display:block}
.stepper{display:inline-flex;align-items:center;border:1.5px solid var(--line);border-radius:12px;background:var(--bg)}
.stepper button{width:48px;height:48px;border:0;background:transparent;font-size:1.4rem;color:var(--accent);cursor:pointer;font-weight:700}
.stepper output{min-width:40px;text-align:center;font-weight:700;font-size:1.1rem}

table{width:100%;border-collapse:collapse;table-layout:auto}
th,td{padding:10px 6px;border-bottom:1px solid var(--line);vertical-align:top;font-size:.95rem}
th{text-align:left;font-weight:600;overflow-wrap:anywhere}
th small{display:block;font-weight:400;color:var(--muted);font-size:.78rem;margin-top:2px}
td{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600}
tr.neg td{color:var(--neg)}tr.pos td{color:var(--pos)}
tr.sub th,tr.sub td{background:var(--accent-soft)}
tr.det th{padding-left:20px;font-weight:400;color:var(--muted)}
tr.det td{font-weight:500;color:var(--muted)}
tr.total th,tr.total td{font-size:1.05rem;border-bottom:2px solid var(--accent);color:var(--accent)}
.scag th,.scag td,.scag thead th{font-size:.85rem}
.scag thead th{color:var(--muted);text-align:right}.scag thead th:first-child{text-align:left}
.cols{display:grid;gap:12px;grid-template-columns:1fr}
@media(min-width:560px){.cols{grid-template-columns:1fr 1fr}}
.stat{border:1px solid var(--line);border-radius:14px;padding:14px;background:var(--bg)}
.stat .k{font-size:.82rem;color:var(--muted);font-weight:600}
.stat .v{font-size:1.5rem;font-weight:800;letter-spacing:-.02em;word-break:break-word}
.stat p{margin:6px 0 0;font-size:.82rem;color:var(--muted)}
.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}
@media(min-width:640px){.actions{grid-template-columns:repeat(4,1fr)}}
.actions button{font:inherit;font-weight:600;font-size:.92rem;border:1.5px solid var(--accent);color:var(--accent);background:transparent;border-radius:12px;padding:12px 8px;min-height:46px;cursor:pointer}
.actions button:hover{background:var(--accent);color:#fff}
.guide p{color:var(--muted);margin:0 0 12px}
details{border-bottom:1px solid var(--line);padding:2px 0}
summary{cursor:pointer;font-weight:600;padding:14px 4px;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";color:var(--accent);font-size:1.3rem;line-height:1}
details[open] summary::after{content:"−"}
details p{margin:0 4px 14px;color:var(--muted)}
.disclaimer{font-size:.85rem;color:var(--muted);margin-top:20px;border-left:3px solid var(--gold);padding:4px 0 4px 12px}
.notes{font-size:.82rem;color:var(--muted);margin:12px 0 0}
#toast{position:fixed;left:50%;bottom:20px;transform:translate(-50%,40px);background:var(--ink);color:var(--bg);padding:10px 18px;border-radius:99px;font-size:.9rem;opacity:0;transition:.25s;pointer-events:none;max-width:90vw}
#toast.show{opacity:1;transform:translate(-50%,0)}
@media print{
  body{background:#fff;color:#000}.seg,.actions,.inputs,.guide,#toast{display:none!important}
  .card,.result{box-shadow:none;border:1px solid #bbb;background:#fff;color:#000}.result{color:#000}
}