.tool-label { display: block; font-size: 13px; font-weight: 600; color: var(--text-light); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 12px; }
    .tool-input { padding: 10px 14px; border: 1px solid var(--border-light); border-radius: 6px; font-size: 14px; background: var(--bg-light); color: var(--text-dark); transition: border-color 0.2s; }
    .tool-input:focus { outline: none; border-color: var(--primary-light); box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1); }
    .ratio-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
    .ratio-item { background: linear-gradient(135deg, #dbeafe, #ede9fe); border-radius: 8px; padding: 16px; text-align: center; }
    .ratio-name { font-size: 13px; color: var(--text-medium); font-weight: 600; margin-bottom: 8px; }
    .ratio-value { font-size: 24px; font-weight: 700; color: var(--primary); margin-bottom: 4px; }
    .ratio-desc { font-size: 11px; color: var(--text-light); }
    @media (max-width: 968px) { .calc-grid { grid-template-columns: 1fr !important; } }