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(width<=768px){.text-h1{font-size:2.25rem}.header{height:70px}.nav-links{display:none}.splitter-body{grid-template-columns:1fr}.splitter-sidebar{border-top:1px solid #e2e8f0;border-left:none;height:auto;position:static}.hero{padding:40px 0}.cta-card{padding:40px 24px}}.page-thumb{background-color:#fff;border-radius:7px;justify-content:center;align-items:center;display:flex;position:absolute;inset:1px;overflow:hidden}.page-thumb img{object-fit:contain;-webkit-user-select:none;user-select:none;pointer-events:none;width:100%;height:100%}.page-card .page-number-badge{z-index:2;box-shadow:var(--shadow-sm);white-space:nowrap;margin-top:0;position:absolute;bottom:8px;left:50%;transform:translate(-50%)}.part-name-row{align-items:center;gap:2px;display:flex}.part-name-input{color:#0f172a;min-width:0;transition:var(--transition-fast);background-color:#f8fafc;border:1px solid #e2e8f0;border-radius:4px;flex:1;padding:4px 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