.fa{--f-accent:#067957;--f-accent-h:#055f45;--f-soft:#ecfbf5;--f-ink:#172033;--f-muted:#5b687e;--f-line:#dfe5ec;--f-bg:#f8fafc;--f-bad:#b42318;--f-bad-g:#e5484d;
box-sizing:border-box;max-width:960px;margin:0 auto 1.5em;padding:16px;background:#fff;border:1px solid var(--f-line);border-radius:14px;color:var(--f-ink);font:16px/1.5 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;box-shadow:0 1px 3px rgba(23,32,51,.06)}
.fa *,.fa *::before,.fa *::after{box-sizing:border-box}
.fa .fa-title{margin:0 0 4px;font-size:1.45em;line-height:1.2;color:var(--f-ink)}
.fa .fa-intro{margin:0 0 12px;color:var(--f-muted)}
.fa-panel{background:var(--f-bg);border:1px solid var(--f-line);border-radius:12px;padding:14px}
.fa-readouts{display:grid;grid-template-columns:1fr 1fr;gap:8px;text-align:center}
.fa-readouts>div{background:#fff;border:1px solid var(--f-line);border-radius:10px;padding:8px}
.fa-readouts>div:first-child{grid-column:1/-1}
.fa-k{display:block;font-size:.8em;color:var(--f-muted)}
.fa-readouts output{display:block;font-weight:700;font-size:1.15em;font-variant-numeric:tabular-nums}
.fa-readouts .fa-big{font-size:clamp(34px,9vw,52px);font-weight:800;line-height:1.1;letter-spacing:-.02em}
.fa-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:12px}
.fa .fa-btn{appearance:none;display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:8px 14px;border:1px solid var(--f-line);border-radius:10px;background:#fff;color:var(--f-ink);font:inherit;font-weight:600;cursor:pointer;line-height:1.2}
.fa .fa-btn:hover{border-color:var(--f-accent);color:var(--f-accent)}
.fa .fa-btn:disabled{opacity:.5;cursor:not-allowed}
.fa .fa-primary{min-width:180px;background:var(--f-accent);border-color:var(--f-accent);color:#fff}
.fa .fa-primary:hover{background:var(--f-accent-h);color:#fff}
.fa.is-live .fa-primary{background:#fff;color:var(--f-bad);border-color:var(--f-bad-g)}
.fa .fa-file{position:relative;overflow:hidden}
.fa .fa-file input{position:absolute;inset:0;opacity:0;cursor:pointer;font-size:0}
.fa .fa-file:focus-within,.fa .fa-btn:focus-visible,.fa select:focus-visible,.fa input:focus-visible,.fa summary:focus-visible{outline:3px solid var(--f-accent);outline-offset:2px}
.fa .fa-sm{min-height:40px;padding:6px 12px;font-size:.92em}
.fa-status{margin:10px 0 0;text-align:center;font-size:.9em;color:var(--f-muted);min-height:1.5em}
.fa-status.is-error{color:var(--f-bad)}
.fa-fig{margin:12px 0 0}
.fa-fig canvas{display:block;width:100%;border:1px solid var(--f-line);border-radius:10px;background:#fff}
.fa-fig [data-fa-spec]{height:220px}
.fa-fig [data-fa-gram]{height:150px;background:#0b1320}
.fa-fig figcaption{font-size:.8em;color:var(--f-muted);margin-top:4px}
.fa [hidden]{display:none!important}
.fa-peaks{margin-top:12px}
.fa-label{font-weight:700;margin:0 0 4px}
.fa-peaks ol{margin:0;padding-left:1.4em;font-variant-numeric:tabular-nums}
.fa-peaks li{margin:2px 0}
.fa-box{margin-top:12px;border:1px solid var(--f-line);border-radius:10px;padding:0 14px}
.fa-box summary{cursor:pointer;font-weight:700;padding:12px 0}
.fa-box[open]{padding-bottom:12px}
.fa-grid{display:grid;grid-template-columns:1fr;gap:10px}
.fa-field>label{display:block;font-weight:700;margin-bottom:4px}
.fa-field select{font:inherit;width:100%;min-height:42px;padding:6px 10px;border:1px solid #c9d3de;border-radius:8px;background:#fff;color:var(--f-ink)}
.fa-checks{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.fa-checks label{display:inline-flex;align-items:center;gap:6px;font-weight:600;min-height:40px}
.fa input[type=checkbox]{width:18px;height:18px;accent-color:var(--f-accent)}
.fa-small{display:block;font-size:.85em;color:var(--f-muted);margin:6px 0 0}
@media (min-width:640px){.fa{padding:22px}.fa-readouts{grid-template-columns:2fr 1fr 1fr}.fa-readouts>div:first-child{grid-column:auto}.fa-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.fa-fig [data-fa-spec]{height:260px}.fa-fig [data-fa-gram]{height:170px}}