:root{--bg:#f7f4ed;--bg-panel:#fbf9f4;--ink:#1a1815;--ink-soft:#5a554b;--ink-faint:#8a847a;--accent:#b14a1f;--accent-deep:#7a2f0f;--good:#2d6a4f;--bad:#b14a1f;--rule:#e2dccb;--rule-strong:#c8bfa8;--sidebar-w:260px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--ink);-webkit-font-smoothing:antialiased;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,system-ui,sans-serif;font-size:16px;line-height:1.65}.layout{min-height:100vh;display:flex}.sidebar{width:var(--sidebar-w);color:#e2dccb;z-index:100;background:#1a1815;flex-direction:column;height:100vh;display:flex;position:fixed;top:0;left:0;overflow-y:auto}.sidebar-header{justify-content:space-between;align-items:center;padding:24px 20px 16px;display:flex}.sidebar-title{letter-spacing:-.01em;font-size:15px;font-weight:600}.sidebar-close{color:#8a847a;cursor:pointer;background:0 0;border:none;font-size:18px;display:none}.sidebar-nav{flex-direction:column;gap:2px;padding:8px 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#1a1815}.wall-layer-label{writing-mode:vertical-rl;color:#0000008c;white-space:nowrap;-webkit-user-select:none;user-select:none;letter-spacing:.02em;font-family:ui-monospace,monospace;font-size:9px;transform:rotate(180deg)}.wall-layer-label--horizontal{writing-mode:horizontal-tb;font-size:10px;transform:none}.wall-layer--hat_channel .wall-layer-label,.wall-layer--rockwool .wall-layer-label{color:#ffffffbf}.wall-layer--air{background-image:repeating-linear-gradient(45deg,#0000,#0000 4px,#0050a014 4px 5px)!important}.wall-layer--rockwool{background-image:radial-gradient(circle,#ffffff40 1px,#0000 1px)!important;background-size:5px 5px!important}.wall-section-labels{margin-top:6px;display:flex}.wall-label{text-align:center;justify-content:center;display:flex}.wall-label-text{color:var(--ink-soft);font-family:ui-monospace,monospace;font-size:10px;line-height:1.3}.wall-label-dim{color:var(--ink-faint);font-size:9px}.wall-legend{color:var(--ink-soft);flex-wrap:wrap;gap:12px;margin:12px 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8px;font-size:16px}.compare-btn-remove:hover{color:var(--bad)}.compare-layers{flex-direction:column;gap:6px;display:flex}.compare-select{border:1px solid var(--rule-strong);background:var(--bg);min-width:0;color:var(--ink);flex:1;padding:6px 8px;font-family:inherit;font-size:13px}.compare-thickness{align-items:center;gap:4px;display:flex}.compare-input{border:1px solid var(--rule-strong);background:var(--bg);width:60px;color:var(--ink);text-align:right;padding:6px 8px;font-family:ui-monospace,monospace;font-size:13px}.compare-unit{color:var(--ink-faint);font-family:ui-monospace,monospace;font-size:12px}.compare-mass-label{color:var(--ink-soft);min-width:70px;font-family:ui-monospace,monospace;font-size:11px}.compare-btn-x{color:var(--ink-faint);cursor:pointer;background:0 0;border:none;padding:0 4px;font-size:18px;line-height:1}.compare-btn-x:hover{color:var(--bad)}.compare-btn-clone{color:var(--ink-faint);cursor:pointer;background:0 0;border:none;padding:0 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8px;font-size:13px;font-weight:500}.compare-td-input{white-space:nowrap;width:100px;padding:4px}.compare-td-actions{width:32px;padding:4px 2px}.compare-layer-row{align-items:center;gap:8px;display:flex}.compare-layer-name{color:var(--ink);min-width:100px;font-size:13px;font-weight:500}.compare-btn-add-assembly{border:1px dashed var(--rule-strong);color:var(--ink-soft);cursor:pointer;background:0 0;padding:14px 20px;font-family:inherit;font-size:14px}.compare-btn-add-assembly:hover{border-color:var(--accent);color:var(--accent)}.doc-goals{counter-reset:goals;padding:0;list-style:none}.doc-goals li{counter-increment:goals;border-top:1px solid var(--rule);color:var(--ink-soft);padding:14px 0;font-size:15px;line-height:1.6}.doc-goals li:last-child{border-bottom:1px solid var(--rule)}.doc-goals li:before{content:counter(goals) ".";color:var(--accent);margin-right:10px;font-weight:700}.doc-goals li strong{color:var(--ink)}