.ec-tool{--ec-border:#dfe5e8;--ec-soft:#f6f8f9;--ec-ink:#122027;--ec-muted:#617079;--ec-accent:#0d6b56;max-width:1050px;margin:0 auto 48px;color:var(--ec-ink)}
.ec-calculator-card,.ec-content-card{background:#fff;border:1px solid var(--ec-border);border-radius:18px;padding:clamp(20px,3vw,34px);box-shadow:0 8px 30px rgba(16,31,39,.05);margin:0 0 22px}.ec-kicker{font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--ec-accent)}.ec-calculator-head h2{font-size:clamp(26px,4vw,38px);margin:6px 0 10px}.ec-calculator-head p{color:var(--ec-muted);max-width:760px}.ec-grid{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(260px,.8fr);gap:24px;margin-top:24px}.ec-fields{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.ec-field{display:block}.ec-label{display:block;font-size:13px;font-weight:700;margin:0 0 6px}.ec-input-wrap{display:flex;align-items:stretch;border:1px solid var(--ec-border);border-radius:10px;overflow:hidden;background:#fff}.ec-input-wrap input,.ec-input-wrap select{width:100%;min-width:0;border:0!important;box-shadow:none!important;padding:12px 13px;background:#fff;color:var(--ec-ink);font:inherit}.ec-input-wrap input:focus,.ec-input-wrap select:focus{outline:2px solid rgba(13,107,86,.18);outline-offset:-2px}.ec-unit{display:flex;align-items:center;padding:0 11px;background:var(--ec-soft);color:var(--ec-muted);font-size:12px;border-left:1px solid var(--ec-border)}.ec-actions{grid-column:1/-1;display:flex;gap:10px;margin-top:4px}.ec-actions button{border:0;border-radius:10px;padding:12px 18px;font-weight:800;cursor:pointer}.ec-calc-btn{background:var(--ec-accent);color:#fff}.ec-reset-btn{background:#e9efed;color:var(--ec-ink)}.ec-result{background:linear-gradient(145deg,#102a25,#17483d);border-radius:16px;padding:24px;color:#fff;min-height:170px;display:flex;flex-direction:column;justify-content:center}.ec-result-label{font-size:12px;text-transform:uppercase;letter-spacing:.1em;opacity:.7}.ec-result-main{font-size:clamp(28px,4vw,42px);font-weight:800;line-height:1.1;margin:8px 0}.ec-result-extra{opacity:.82}.ec-content-card h2,.ec-content-card h3{margin-top:1.3em}.ec-formula{background:var(--ec-soft);border-left:4px solid var(--ec-accent);padding:14px 16px;border-radius:8px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace}.ec-notice{margin-top:16px;padding:14px 16px;background:#fff7e8;border:1px solid #f2dfb5;border-radius:10px}.ec-faq details{border-top:1px solid var(--ec-border);padding:13px 0}.ec-faq summary{cursor:pointer;font-weight:800}.ec-faq p{color:var(--ec-muted)}.ec-var-list,.ec-use-cases,.ec-related-tools{margin:10px 0 16px;padding-left:20px}.ec-var-list li,.ec-use-cases li{margin:0 0 6px;color:var(--ec-muted)}.ec-var-list strong{color:var(--ec-ink)}.ec-related-tools{list-style:none;padding-left:0;display:grid;gap:10px}.ec-related-tools li{background:var(--ec-soft);border:1px solid var(--ec-border);border-radius:10px;padding:12px 14px;color:var(--ec-muted)}.ec-related-tools a{color:var(--ec-accent);font-weight:800;text-decoration:none}.ec-related-tools a:hover{text-decoration:underline}
@media(max-width:760px){.ec-grid{grid-template-columns:1fr}.ec-fields{grid-template-columns:1fr}.ec-result{min-height:140px}.ec-actions{position:sticky;bottom:8px;background:rgba(255,255,255,.94);padding:8px 0;z-index:3}}