.back{display:inline-block;margin-bottom:22px;color:var(--green);font-size:.85rem;text-decoration:none}.calculator-header h1{font-size:clamp(2.6rem,5vw,4.8rem)}.app-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.spaced{display:block;margin-top:16px}label>span{font-size:.82rem}input,select,.unit-input span{height:44px}input[readonly]{background:#f2f5f7;color:#526274}.helper,small{font-size:.78rem;line-height:1.55;color:var(--muted)}small{display:block;margin-top:8px}.choices{display:flex;flex-wrap:wrap;gap:10px}.choices label{display:flex;gap:8px;align-items:center;padding:10px 14px;border:1px solid var(--line);cursor:pointer}.choices input{width:16px;height:16px;margin:0;accent-color:var(--green)}.choices span{margin:0}.choices label:has(:checked){background:var(--palegreen);border-color:var(--green)}.pressure-inputs{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.pressure-inputs .unit-input span{min-width:38px;padding:0 6px}.summary-dimension{font-size:clamp(2rem,4vw,3.8rem)}.result-context{font-size:.82rem}.metrics{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line);border-left:1px solid var(--line);margin-top:20px}.metrics>div{padding:14px;border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.metrics span{display:block;color:var(--muted);font-size:.76rem}.metrics strong{display:block;margin-top:6px;font-size:1.2rem}h3{font-size:.95rem;margin-top:26px}.vessel-bar{display:flex;height:35px;background:var(--soft);overflow:hidden}#coldBar{background:#609abc}#expansionBar{background:var(--green)}#gasBar{background:#dce3ea}.legend{display:flex;flex-wrap:wrap;gap:10px;font-size:.7rem;color:var(--muted);margin-top:10px}.legend i{display:inline-block;width:9px;height:9px;background:#609abc;margin-right:5px}.legend span:nth-child(2) i{background:var(--green)}.legend span:nth-child(3) i{background:#dce3ea}.pressure-list{list-style:none;padding:0;margin:0}.pressure-list li{display:flex;justify-content:space-between;gap:15px;padding:12px 0;border-bottom:1px solid var(--line);font-size:.8rem}.pressure-list strong{white-space:nowrap}.verdict{padding:12px;background:var(--palegreen);font-size:.82rem;line-height:1.5}.verdict.fail,#error{background:#fff1e9;color:#963a1d;padding:13px;border-left:3px solid #b64a26}.result-summary.fail{background:#963a1d}details{font-size:.82rem;line-height:1.65;color:var(--muted)}summary{cursor:pointer;color:var(--ink);font-weight:700}summary:focus-visible{outline:2px solid var(--green)}.method{margin-top:24px;border:1px solid var(--line);padding:20px}.method a{color:var(--green)}.calculation p{overflow-wrap:anywhere}button{margin-top:12px;border:1px solid var(--line);background:#fff;padding:10px 12px;font:600 .8rem Manrope,system-ui;cursor:pointer;color:var(--ink)}button:hover{background:var(--soft)}[hidden]{display:none!important}@media(max-width:950px){.app-grid{grid-template-columns:1fr}}@media(max-width:480px){.pressure-inputs{grid-template-columns:1fr}.metrics strong{font-size:1.05rem}}
.field-row.spaced{display:grid}#results{margin-top:20px}