:root{--bg:#f3efe7;--paper:#f7f4ee;--panel:#fffdf9;--line:#e3dccf;--ink:#2b2824;--muted:#8a8174;--accent:#b5653a;--accent-soft:#f3e3d8;--teal:#2f5d62}dialog{border:1px solid var(--line);border-radius:14px;padding:24px;max-width:520px;width:calc(100% - 40px);color:var(--ink);background:var(--panel)}dialog::backdrop{background:#1e191459}*{box-sizing:border-box}html,body{margin:0;height:100%;background:var(--bg);color:var(--ink);overflow:hidden;overscroll-behavior:none;touch-action:manipulation;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;font:13px/1.5 -apple-system,BlinkMacSystemFont,PingFang TC,Microsoft JhengHei,sans-serif}button,input,select{font:inherit;color:inherit}.app{display:grid;grid-template-rows:auto minmax(0,1fr) 30px;grid-template-columns:236px minmax(0,1fr) 300px;height:100vh;height:100dvh;padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) 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.btn:hover{position:relative;z-index:1;width:82px;min-height:32px;background:transparent;border-color:transparent;box-shadow:none;color:#625448}header.office-ribbon #viewSeg .btn[data-view="2d"],body.m3d header.office-ribbon #viewSeg .btn[data-view="3d"]{color:#fff}body.m3d header.office-ribbon #viewSeg .btn[data-view="2d"]{color:#625448}header.office-ribbon .layout-picker{padding:4px 8px;background:#faf6f1;border:1px solid #ebe1d6;border-radius:8px}header.office-ribbon .layout-picker select{color:#4d453d}header.office-ribbon .menu-pop{z-index:30}header.office-ribbon .range{padding:4px 7px}header.office-ribbon .range input{accent-color:#b5653a}@media(max-width:1050px){.ribbon-brand{min-width:125px;max-width:200px}.ribbon-topline{gap:7px;padding:0 9px}.ribbon-tab{padding:0 12px}.ribbon-section{padding-left:8px;padding-right:8px}.ribbon-page{gap:6px;padding:7px}}@media(max-width:600px){.ribbon-brand{display:none}.ribbon-topline{min-height:46px}.ribbon-content,.ribbon-page{min-height:93px}}@media(prefers-reduced-motion:reduce){header.office-ribbon .btn,.ribbon-tab{transition:none}}header.office-ribbon .ribbon-tab{display:inline-flex;align-items:center;justify-content:center;gap:7px}.ribbon-tab-icon{font-size:17px;line-height:1;color:#9b6849;min-width:16px;text-align:center}.ribbon-home-section{min-width:140px;max-width:420px}.ribbon-home-actions{display:flex;align-items:center;flex-wrap:wrap;gap:6px;max-width:360px}header.office-ribbon .ribbon-home-actions .ribbon-quick-action{min-height:39px;padding:7px 11px}header.office-ribbon .ribbon-home-actions .ribbon-quick-action.is-active{background:#b5653a;color:#fff;border-color:#b5653a}header.office-ribbon .ribbon-home-actions .ribbon-quick-action.is-active:hover{background:#944d2b;color:#fff}header.office-ribbon .ribbon-section button.btn[data-ribbon-icon]:before{font-family:system-ui,Segoe UI Symbol,sans-serif;font-size:16px;line-height:1;flex:none}header.office-ribbon .ribbon-top-actions button[data-ribbon-icon]:before{content:attr(data-ribbon-icon);margin-right:5px;font-weight:600}header.office-ribbon button.btn:disabled{opacity:.54;cursor:not-allowed}header.office-ribbon .ribbon-home-actions .ribbon-quick-action{display:inline-flex;align-items:center;gap:7px;background:#fff;color:#44372d;border:1px solid #e6d9ca}header.office-ribbon .ribbon-home-actions .ribbon-quick-action:before{content:attr(data-ribbon-icon);font:600 16px/1 system-ui,Segoe UI Symbol,sans-serif}header.office-ribbon .ribbon-home-actions .ribbon-quick-action:hover:not(:disabled){background:#f6e9dd;color:#8f4828}header.office-ribbon .ribbon-home-actions .ribbon-quick-action.is-active,header.office-ribbon .ribbon-home-actions .ribbon-quick-action.is-active:hover:not(:disabled){background:#b5653a;color:#fff;border-color:#b5653a}