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20px;border-radius:6px;cursor:pointer;font-size:13px;font-family:inherit;transition:background .15s ease-out,border-color .15s ease-out,transform .15s ease-out}.hover-btn-danger:hover{background:#ef44441a;border-color:#ef4444;transform:translateY(-1px)}.hover-btn-danger:active{transform:translateY(0)}.rm-demo-row{display:flex;align-items:center;gap:12px;min-height:40px}.rm-fade-demo{flex:1}.rm-pulse-box{background:var(--color-border);border-radius:4px;padding:8px 14px;font-size:13px;color:var(--color-muted);font-family:var(--font-mono)}.ref-header{display:grid;grid-template-columns:150px 280px 1fr;gap:16px;padding:10px 16px;background:#ffffff08;border-bottom:1px solid var(--color-border);font-size:11px;font-weight:600;color:var(--color-muted);text-transform:uppercase;letter-spacing:.05em;font-family:var(--font-mono)}.ref-row{display:grid;grid-template-columns:150px 280px 1fr;gap:16px;padding:12px 16px;border-bottom:1px solid var(--color-border);align-items:center}.principles-list{display:flex;flex-direction:column;gap:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;overflow:hidden}.principle{display:flex;gap:20px;padding:20px;border-bottom:1px solid var(--color-border);align-items:flex-start}.principle:last-child{border-bottom:none}.principle-num{font-size:13px;color:var(--color-amber);font-weight:700;flex-shrink:0;margin-top:2px}.principle-title{font-size:14px;font-weight:600;margin-bottom:4px}.principle-desc{font-size:13px;line-height:1.6}.grid-demo{display:flex;flex-direction:column;gap:8px;background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:20px}.grid-row-demo{display:flex;align-items:center;gap:16px}.grid-meta{width:60px;font-size:12px;flex-shrink:0}.grid-visual{display:grid;gap:4px;flex:1}.grid-cell{height:20px;background:#ffb00026;border:1px solid rgba(255,176,0,.3);border-radius:3px}.code-snippet{background:#0d0d0d;border:1px solid var(--color-border);border-radius:8px;padding:16px;font-size:13px;line-height:1.7;white-space:pre;overflow-x:auto}.tok-keyword{color:#c3a6d4}.tok-string{color:#7bc67e}.tok-comment{color:#555;font-style:italic}.spacing-row{grid-template-columns:130px 80px 130px 1fr!important}.spacing-bar-wrap{display:flex;align-items:center}.spacing-bar{height:10px;background:#4ecdc466;border-radius:2px;border:1px solid rgba(78,205,196,.6)}.placeholder-banner{display:flex;align-items:flex-start;gap:16px;background:#ffb0000f;border:1px solid rgba(255,176,0,.2);border-radius:8px;padding:20px 24px}.placeholder-icon{font-size:24px;flex-shrink:0}.placeholder-title{font-size:15px;font-weight:600;color:var(--color-amber);margin-bottom:4px}.placeholder-sub{font-size:13px}.ref-table{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;overflow:hidden}.ref-header{display:grid;grid-template-columns:130px 80px 130px 1fr;gap:16px;padding:10px 16px;background:#ffffff08;border-bottom:1px solid var(--color-border);font-size:11px;font-weight:600;color:var(--color-muted);text-transform:uppercase;letter-spacing:.05em;font-family:var(--font-mono)}.ref-row{display:grid;grid-template-columns:130px 80px 130px 1fr;gap:16px;padding:12px 16px;border-bottom:1px solid var(--color-border);align-items:center}.ref-row:last-child{border-bottom:none}.section{display:flex;flex-direction:column;gap:16px}.section-title{font-size:18px;font-weight:600}.section-desc{font-size:14px}.muted{color:var(--color-muted)}.mono{font-family:var(--font-mono)}