.calc-page{max-width:1200px}.calc-hero{padding:54px 0 32px;border-bottom:1px solid var(--line)}.calc-hero h1{font-size:clamp(43px,6vw,76px);max-width:850px}.calc-shell{display:grid;grid-template-columns:minmax(0,1fr) minmax(330px,.78fr);gap:24px;padding:36px 0 58px}.calc-panel,.result-panel{border:1px solid var(--ink);padding:24px;background:#fffdf7}.result-panel{background:var(--ink);color:var(--paper);height:max-content;position:sticky;top:18px}.panel-label,.field label{font-size:12px;font-weight:bold;text-transform:uppercase;letter-spacing:.1em;color:#50665a}.result-panel .panel-label{color:var(--lime)}.fieldset{border:0;border-top:1px solid var(--line);padding:18px 0 0;margin:22px 0 0}.fieldset legend{font:22px var(--serif);padding-right:8px}.fields{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:17px}.field{display:grid;gap:6px}.field.full{grid-column:1/-1}.field input,.field select{width:100%;min-width:0;border:1px solid #759086;background:#fff;padding:11px 9px;color:var(--ink);font:16px var(--sans)}.field input:focus,.field select:focus{outline:3px solid var(--lime);outline-offset:1px}.check{display:flex;gap:9px;align-items:center;margin-top:13px;font-size:14px}.check input{width:18px;height:18px;accent-color:var(--ink)}.actions,.utility{display:flex;flex-wrap:wrap;gap:9px;margin-top:23px}.actions button,.utility button{cursor:pointer;font:700 14px var(--sans);padding:11px 14px;border:1px solid var(--ink);background:var(--ink);color:var(--paper)}.actions button.secondary,.utility button{background:transparent;color:var(--ink)}.utility button{color:var(--paper);border-color:#80968a;padding:8px 10px;font-size:12px}.result-main{font:clamp(43px,5vw,63px)/.94 var(--serif);letter-spacing:-.04em;margin:18px 0 7px}.result-unit,.result-note{color:#c9d8ce;font-size:14px}.breakdown{list-style:none;margin:20px 0 0;padding:0;border-top:1px solid #4d665b}.breakdown li{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px solid #4d665b;font-size:14px}.breakdown strong{text-align:right}.status{min-height:20px;margin-top:13px;font-size:13px;color:#b7cabf}.status.error{color:#ffd1b9}.warning{margin-top:18px;padding:12px;border-left:4px solid var(--orange);background:#273c34;color:#fff1e7;font-size:14px}.calc-copy{max-width:800px;padding-bottom:72px}.calc-copy h2{font-size:38px;margin:46px 0 13px}.calc-copy h3{font:26px var(--serif);margin:28px 0 9px}.calc-copy li,.calc-copy p{color:#344a40}.related{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.related a{border:1px solid var(--ink);padding:14px;background:#fffdf7;text-decoration:none;font:20px/1.05 var(--serif)}@media(max-width:820px){.calc-shell{grid-template-columns:1fr}.result-panel{position:static}}@media(max-width:520px){.calc-hero{padding-top:40px}.calc-panel,.result-panel{padding:18px}.fields{grid-template-columns:1fr}.field.full{grid-column:auto}.actions button{flex:1}.related{grid-template-columns:1fr}}