:root{--fc-primary:#3b82f6;--fc-primary-light:#dbeafe;--fc-text:#1e293b;--fc-text-secondary:#475569;--fc-text-muted:#64748b;--fc-bg:#fff;--fc-bg-secondary:#f8fafc;--fc-border:#e2e8f0;--fc-radius:var(--main-radius,.5rem);--fc-radius-lg:var(--main-radius-lg,.75rem);--fc-shadow:0 1px 3px #0000000f, 0 1px 2px #0000000a;--fc-shadow-md:0 4px 12px #00000014;--fc-force:#ef4444;--fc-mass:#8b5cf6;--fc-acceleration:#f59e0b;--fc-result:#10b981}._fc-container{max-width:600px;margin:0 auto}._fc-hidden{display:none!important}@media (max-width:768px){._fc-container{padding-left:1rem;padding-right:1rem}}._fc-grid{grid-template-columns:1fr 1fr 1fr;gap:.75rem;display:grid}._fc-card{background:var(--fc-bg);border-radius:var(--fc-radius-lg);border-style:solid;border-width:1.5px;border-color:var(--fc-border);box-shadow:var(--fc-shadow);padding:1rem;transition:border-color .2s,box-shadow .2s}._fc-card-input{border-color:var(--fc-primary);box-shadow:0 0 0 2px #3b82f61a}._fc-card-result{border-color:var(--fc-result);box-shadow:0 0 0 2px #10b9811a}._fc-card-header{justify-content:space-between;align-items:center;margin-bottom:.625rem;display:flex}._fc-card-label{color:var(--fc-text);align-items:center;gap:.5rem;font-size:.8125rem;font-weight:600;display:flex}._fc-card-symbol{border-radius:var(--main-radius-full,50%);width:1.625rem;height:1.625rem;font-size:.8125rem;font-weight:700;font-family:var(--main-font-mono,monospace);justify-content:center;align-items:center;display:inline-flex}[data-param=force] ._fc-card-symbol{color:var(--fc-force);background:#ef44441a}[data-param=mass] ._fc-card-symbol{color:var(--fc-mass);background:#8b5cf61a}[data-param=acceleration] ._fc-card-symbol{color:var(--fc-acceleration);background:#f59e0b1a}._fc-card-badge{border-radius:var(--main-radius-full,50%);letter-spacing:.02em;padding:.125rem 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svg{flex-shrink:0;width:14px;height:14px}._fc-btn-reset{color:var(--fc-force);border-color:#ef44444d}._fc-btn-examples{color:var(--fc-primary);border-color:#3b82f64d}@media (max-width:480px){._fc-toolbar{flex-wrap:wrap}}._fc-examples{background:var(--fc-bg);border-radius:var(--fc-radius-lg);border-style:solid;border-width:1.5px;border-color:var(--fc-border);box-shadow:var(--fc-shadow);margin-top:.75rem;padding:.75rem}._fc-examples-list{grid-template-columns:1fr 1fr;gap:.5rem;display:grid}._fc-example-btn{border-radius:var(--fc-radius);background:var(--fc-bg-secondary);color:var(--fc-text-secondary);cursor:pointer;text-align:left;border:none;align-items:center;gap:.5rem;padding:.5rem .75rem;font-size:.8125rem;transition:opacity .15s;display:flex}._fc-example-btn:hover{opacity:.75}._fc-example-icon{color:var(--fc-primary);flex-shrink:0}._fc-example-icon svg{width:14px;height:14px}._fc-example-label{font-size:.75rem;line-height:1.3}@media (max-width:480px){._fc-examples-list{grid-template-columns:1fr}}._fc-formula{background:var(--fc-bg);border-radius:var(--fc-radius-lg);border-style:dashed;border-width:1.5px;border-color:var(--fc-border);margin-top:1rem;padding:1rem}._fc-formula-title{color:var(--fc-text-secondary);align-items:center;gap:.375rem;margin-bottom:.625rem;font-size:.8125rem;font-weight:600;display:flex}._fc-formula-title svg{width:14px;height:14px;color:var(--fc-primary)}._fc-formula-content{flex-direction:column;gap:.5rem;display:flex}._fc-formula-line{flex-wrap:wrap;align-items:center;gap:1rem;display:flex}._fc-formula-eq{font-family:var(--main-font-mono,monospace);color:var(--fc-text);font-size:.9375rem;font-weight:600}._fc-formula-sub{font-family:var(--main-font-mono,monospace);color:var(--fc-result);font-size:.875rem;font-weight:600}._fc-conversion{margin-top:1rem}._fc-conversion-toggle{background:var(--fc-bg);border-style:solid;border-width:1.5px;border-color:var(--fc-border);border-radius:var(--fc-radius-lg);width:100%;box-shadow:var(--fc-shadow);color:var(--fc-text-secondary);cursor:pointer;align-items:center;gap:.375rem;padding:.75rem 1rem;font-size:.8125rem;font-weight:600;transition:opacity .15s;display:flex}._fc-conversion-toggle:hover{opacity:.8}._fc-conversion-toggle svg:first-child{width:14px;height:14px;color:var(--fc-primary)}._fc-conversion-toggle svg:last-child{width:12px;height:12px;margin-left:auto;transition:rotate .2s}._fc-conversion-open svg:last-child{rotate:180deg}._fc-conversion-content{background:var(--fc-bg);border-radius:var(--fc-radius-lg);border-style:solid;border-width:1.5px;border-color:var(--fc-border);box-shadow:var(--fc-shadow);margin-top:.5rem;padding:1rem;overflow-x:auto}._fc-conversion-table{border-collapse:collapse;width:100%;font-size:.8125rem}._fc-conversion-table td{border-bottom-style:solid;border-bottom-width:1px;border-bottom-color:var(--fc-border);padding:.375rem .75rem}._fc-conversion-table td:first-child{font-family:var(--main-font-mono,monospace);color:var(--fc-text);text-align:right;width:60%;font-weight:600}._fc-conversion-table td:last-child{color:var(--fc-text-secondary);font-weight:500}._fc-conversion-table tr:last-child td{border-bottom:none}._fc-comparison{background:var(--fc-bg);border-radius:var(--fc-radius-lg);border-style:solid;border-width:1.5px;border-color:var(--fc-border);box-shadow:var(--fc-shadow);margin-top:1rem;padding:1rem}._fc-comparison-title{color:var(--fc-text-secondary);align-items:center;gap:.375rem;margin-bottom:.75rem;font-size:.8125rem;font-weight:600;display:flex}._fc-comparison-title svg{width:14px;height:14px;color:var(--fc-primary)}._fc-bar-row{align-items:center;gap:.625rem;padding:.3125rem 0;display:flex}._fc-bar-label{width:120px;color:var(--fc-text-secondary);text-align:right;flex-shrink:0;font-size:.75rem}._fc-bar-track{background:var(--fc-bg-secondary);border-radius:4px;flex:1;height:8px;overflow:hidden}._fc-bar-fill{background:var(--fc-border);border-radius:4px;height:100%;transition:width .3s}._fc-bar-result ._fc-bar-fill{background:var(--fc-primary)}._fc-bar-result ._fc-bar-label{color:var(--fc-primary);font-weight:600}._fc-bar-value{width:80px;font-size:.6875rem;font-family:var(--main-font-mono,monospace);color:var(--fc-text-muted);white-space:nowrap;flex-shrink:0}._fc-bar-result ._fc-bar-value{color:var(--fc-primary);font-weight:600}@media (max-width:480px){._fc-bar-label{width:90px;font-size:.6875rem}._fc-bar-value{width:65px;font-size:.625rem}}._fc-reference{margin-top:1.5rem}._fc-reference-toggle{background:var(--fc-bg);border-style:solid;border-width:1.5px;border-color:var(--fc-border);border-radius:var(--fc-radius-lg);width:100%;box-shadow:var(--fc-shadow);color:var(--fc-text-secondary);cursor:pointer;align-items:center;gap:.375rem;padding:.75rem 1rem;font-size:.8125rem;font-weight:600;transition:opacity .15s;display:flex}._fc-reference-toggle:hover{opacity:.8}._fc-reference-toggle svg:first-child{width:14px;height:14px;color:var(--fc-primary)}._fc-reference-toggle svg:last-child{width:12px;height:12px;margin-left:auto;transition:rotate 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