.particle-section{margin-bottom:80px}.particle-panel{background:var(--white);border:1px solid var(--line);border-radius:8px;padding:30px}.chart-top{display:flex;justify-content:space-between;gap:20px;padding-bottom:20px;border-bottom:1px solid var(--line);margin-bottom:20px;font-size:16px}.chart-top span{font-size:12px;color:var(--muted)}.chart-scroll{overflow-x:auto;scrollbar-color:var(--clay) var(--sand);scrollbar-width:thin}.particle-chart{display:block;width:100%;min-width:760px;height:auto}.chart-caption{font-size:12px;color:var(--muted);max-width:95ch;margin:15px 0 24px;line-height:1.6}.contaminant-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;border-top:1px solid var(--line);padding-top:25px}.contaminant-grid h3{font-family:var(--sans);font-size:16px;font-weight:650;letter-spacing:0;line-height:1.3;margin-bottom:10px}.contaminant-grid p{font-size:14px;color:var(--muted);line-height:1.65}.filter-heading{font-size:30px;margin-top:26px;margin-bottom:10px}.table-scroll{overflow-x:auto;scrollbar-color:var(--clay) var(--sand)}.filter-table{width:100%;border-collapse:collapse;font-size:13px;text-align:left;min-width:670px;line-height:1.5}.filter-table caption{text-align:left;font-weight:650;margin-bottom:14px}.filter-table th,.filter-table td{padding:14px 16px;border-bottom:1px solid var(--line);vertical-align:top}.filter-table thead{background:var(--ink);color:var(--white)}.filter-table thead small{font-weight:400;font-size:11px}.filter-table tbody th{white-space:nowrap}.filter-table td:last-child{max-width:235px}.filter-table .recommended{background:var(--pale)}.filter-table .recommended th{color:var(--adobe-dark)}.filter-table .hepa{background:#eee7df}.gas-note{display:grid;grid-template-columns:1fr 2fr;gap:24px;margin-top:25px;padding:22px;background:var(--sand);border-radius:4px;font-size:14px}.gas-note p{margin:0}.chart-sources{font-size:12px;color:var(--muted);margin-top:22px;margin-bottom:0;max-width:none}.chart-sources a{white-space:normal}@media(max-width:700px){.particle-section{margin-bottom:50px}.particle-panel{padding:20px 16px}.chart-top{flex-direction:column;gap:7px}.chart-scroll:after{content:'Scroll to compare all sizes →';display:block;font-size:11px;color:var(--muted);margin:8px 0}.contaminant-grid{grid-template-columns:1fr;gap:8px}.gas-note{grid-template-columns:1fr;gap:12px;padding:18px}.filter-heading{font-size:27px}.chart-caption{font-size:12px}.table-scroll{margin-bottom:10px}}@media print{.particle-section{display:none}}