.masthead{gap:24px}
.history-controls{display:flex;gap:6px;margin-left:auto}
.history-controls button{min-height:44px;padding:8px 12px;background:var(--paper);border:1px solid var(--line);border-radius:8px;font:inherit;font-size:14px}
.history-controls button:hover:not(:disabled){background:var(--soft);border-color:var(--gold)}
.history-controls button:disabled{cursor:default}
.preview-label{margin-left:0}
.openings-panel{margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.openings-panel summary{min-height:44px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:19px;font-weight:600}
.openings-panel summary span{font-size:14px;font-weight:400;color:var(--secondary)}
.openings-panel h3{font-size:19px;margin:24px 0 12px}
.openings-plan svg{width:100%;height:auto;max-height:310px;margin:12px 0}
.opening-row{padding:14px 0;border-bottom:1px solid var(--line)}
.opening-row p{font-size:15px;margin:0 0 8px}
.opening-row button{font-size:14px}
.keep-openings{display:flex!important;gap:10px;align-items:flex-start;line-height:1.4;font-size:14px!important}
.designer-section .keep-openings input{flex:0 0 20px;width:20px;min-height:20px;height:20px;margin:0;accent-color:var(--gold)}
.choices{scrollbar-color:#c8c1b6 var(--paper)}
.design-steps{flex-wrap:nowrap;gap:6px;margin:22px 0}
.design-steps a{flex:1;display:flex;align-items:center;justify-content:center;padding:10px 6px;min-height:46px;font-size:15px;white-space:nowrap}
.design-steps a[aria-current=step]{background:var(--ink);border-color:var(--ink);color:white}
.designer-section label,.config-fields label{line-height:1.3}
.designer-section input,.designer-section textarea{caret-color:var(--gold)}
.designer-section input::placeholder,.designer-section textarea::placeholder{color:#66615b;opacity:1}
.step-next{display:flex;gap:10px;margin:24px 0 10px}
.step-next button{flex:1;min-height:48px;border-radius:8px;padding:12px;border:1px solid var(--ink);background:var(--ink);color:white;font:inherit}
.step-next button.secondary{background:white;color:var(--ink)}
@media(min-width:1001px){.studio{grid-template-columns:minmax(0,1fr) 410px}.choices{padding:30px 28px}}
@media(min-width:1550px){.studio{grid-template-columns:minmax(0,1fr) 440px}}
@media(max-width:720px){.masthead{gap:8px;padding:0 16px;flex-wrap:wrap;height:auto;min-height:70px}.masthead img{width:116px}.history-controls{gap:4px}.history-controls button{font-size:13px;padding:8px 10px}.preview-label{display:none}.room-caption{max-width:calc(100% - 165px)}.room-caption span:first-child{font-size:17px}.choices{padding:26px 20px}.room-tools{bottom:56px}.room-hint{max-width:calc(100% - 32px);left:16px;right:16px;line-height:1.35}}