.calc{--c-line:var(--line,#dfe3dc);--c-ink:var(--ink,#131713);--c-muted:var(--muted,#687068);--c-accent:var(--green,#1e5b3a);--c-soft:var(--green-soft,#e7f0e9);--c-hi:var(--lime,#dff36f);display:grid;gap:16px}
.calc-form{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:12px;background:#fff;border:1px solid var(--c-line);border-radius:12px;padding:14px}
.calc-form label{display:grid;gap:6px;align-content:start;font-size:13px;font-weight:600;color:var(--c-ink)}
.calc-form .calc-wide{grid-column:1/-1}
.calc-form select,.calc-form input[type=number]{padding:8px 10px;border:1px solid var(--c-line);border-radius:8px;font-size:15px;background:#fff;color:var(--c-ink);min-width:0;font-variant-numeric:tabular-nums}
.calc-form input[type=number]:focus,.calc-form select:focus{outline:3px solid var(--c-hi);outline-offset:1px;border-color:var(--c-accent)}
.calc-legend{grid-column:1/-1;margin:4px 0 0;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--c-accent);font-weight:700}
.calc-hint{font-size:12px;font-weight:500;color:var(--c-muted)}
.calc-results{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin:0}
.calc-stat{background:#fff;border:1px solid var(--c-line);border-radius:12px;padding:14px;display:grid;gap:4px;align-content:start}
.calc-stat dt{font-size:13px;font-weight:600;color:var(--c-muted)}
.calc-stat dd{margin:0;font-size:24px;font-weight:800;letter-spacing:-.01em;color:var(--c-ink);font-variant-numeric:tabular-nums;overflow-wrap:anywhere}
.calc-stat dd small{display:block;font-size:13px;font-weight:500;color:var(--c-muted);letter-spacing:0}
.calc-stat.is-main{background:var(--c-soft);border-color:var(--c-accent)}
.calc-stat.is-main dd{color:var(--c-accent)}
.calc-stat.is-bad dd{color:#9a2f2f}
.calc-table-wrap{overflow-x:auto;background:#fff;border:1px solid var(--c-line);border-radius:12px}
.calc-table{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums}
.calc-table th,.calc-table td{padding:10px 12px;border-bottom:1px solid var(--c-line);text-align:right;white-space:nowrap}
.calc-table th:first-child,.calc-table td:first-child{text-align:left;white-space:normal}
.calc-table thead th{font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--c-muted);background:var(--c-soft)}
.calc-table tbody tr:last-child td{border-bottom:0}
.calc-table td small{display:block;font-size:12px;color:var(--c-muted);font-weight:500}
.calc-table tr.is-best td{background:#f6fbe3}
.calc-table tr.is-best td:first-child strong::after{content:" (keeps most)";font-weight:600;color:var(--c-accent);font-size:12px}
.calc-warn{margin:0;background:#fff7e6;border:1px solid #f0d49b;color:#6b4a07;border-radius:10px;padding:10px 12px;font-size:14px}
.calc-note{font-size:13px;color:var(--c-muted);margin:0}
.calc-guide{font-size:14px;margin:0}
.calc-guide a{color:var(--c-accent);font-weight:700}
.calc-breakdown{margin:0;padding:0;list-style:none;display:grid;gap:4px;font-size:14px;font-variant-numeric:tabular-nums;background:#fff;border:1px solid var(--c-line);border-radius:12px;padding:12px 14px}
.calc-breakdown li{display:flex;justify-content:space-between;gap:12px}
.calc-breakdown li span:last-child{white-space:nowrap}
.calc-breakdown li.is-total{border-top:1px solid var(--c-line);padding-top:6px;margin-top:2px;font-weight:700}
/* the page styles every input and button inside .lab-tool; these rules win back the tool's own look */
.calc [hidden]{display:none!important}
.calc .calc-check{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px;cursor:pointer}
.calc .calc-check input{width:auto;padding:0;margin:0;border:0;accent-color:var(--c-accent)}
@media (max-width:480px){.calc-stat dd{font-size:21px}.calc-table th,.calc-table td{padding:8px}}