:root{--accent:var(--calc-color-daily);--accent-glow:#34d3992e}.main-container{max-width:1100px;margin:0 auto;padding:24px 20px 40px}.page-title{text-align:center;color:var(--calc-text-primary);margin:0 0 8px;font-size:2rem;font-weight:800}.section-desc{text-align:center;color:var(--calc-text-dim);margin:0 0 20px;font-size:.95rem}.outer-tab-bar{border-bottom:1px solid var(--calc-border-subtle);flex-wrap:wrap;gap:6px;margin-bottom:20px;padding-bottom:0;display:flex}.outer-tab-btn{color:var(--calc-text-dim);cursor:pointer;white-space:nowrap;background:0 0;border:none;border-bottom:3px solid #0000;border-radius:0;margin-bottom:-1px;padding:10px 18px;font-size:.88rem;font-weight:600;transition:color .2s,border-color .2s}.outer-tab-btn:hover{color:var(--calc-text-primary)}.outer-tab-btn.active{color:var(--accent);border-bottom-color:var(--accent)}.outer-tab-panel{display:none}.outer-tab-panel.active{display:block}.preset-row{flex-wrap:wrap;justify-content:center;gap:8px;margin-bottom:20px;display:flex}.preset-chip{background:var(--calc-bg-card);border:1px solid var(--calc-border-subtle);color:var(--calc-text-dim);cursor:pointer;border-radius:20px;padding:6px 16px;font-size:.82rem;font-weight:600;transition:all .2s}.preset-chip:hover{border-color:var(--accent);color:var(--calc-text-primary)}.preset-chip.active{background:var(--accent-glow);border-color:var(--accent);color:var(--accent)}.calc-grid{grid-template-columns:1fr 1fr;align-items:start;gap:20px;display:grid}.noise-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-lg);padding:20px}.card-header{letter-spacing:.06em;text-transform:uppercase;color:var(--accent);border-bottom:1px solid var(--calc-border-subtle);align-items:center;gap:8px;margin-bottom:18px;padding-bottom:12px;font-size:.78rem;font-weight:700;display:flex}.source-block{border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);background:var(--calc-bg-glass);margin-bottom:12px;padding:14px}.source-block-header{letter-spacing:.05em;color:var(--calc-text-dim);text-transform:uppercase;margin-bottom:12px;font-size:.75rem;font-weight:700}.source-inputs{grid-template-columns:1fr 1fr;gap:10px;display:grid}.form-group{flex-direction:column;gap:5px;display:flex}.form-group label{color:var(--calc-text-dim);font-size:.78rem;font-weight:600}.glass-input,.glass-select{background:var(--calc-bg-input);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);width:100%;color:var(--calc-text-primary);padding:8px 10px;font-family:inherit;font-size:.88rem;transition:border-color .2s}.glass-input:focus,.glass-select:focus{border-color:var(--accent);outline:none}.glass-select{-webkit-appearance:none;appearance:none;cursor:pointer;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238888aa' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");background-position:right 10px center;background-repeat:no-repeat;padding-right:30px}input[type=number]::-webkit-outer-spin-button,input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}input[type=number]{-moz-appearance:textfield;appearance:textfield}.custom-db-wrap{grid-column:1/-1}.add-source-btn{border:1px dashed var(--calc-border-default);border-radius:var(--calc-radius-md);color:var(--calc-text-dim);cursor:pointer;background:0 0;justify-content:center;align-items:center;gap:6px;width:100%;margin-top:4px;padding:9px 16px;font-size:.83rem;font-weight:600;transition:all .2s;display:flex}.add-source-btn:hover{border-color:var(--accent);color:var(--accent)}.remove-source-btn{color:var(--calc-text-dim);cursor:pointer;background:0 0;border:none;margin-left:auto;padding:0;font-size:.75rem;transition:color .2s}.remove-source-btn:hover{color:var(--calc-rose)}.source-block-header-row{align-items:center;margin-bottom:12px;display:flex}.result-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-lg);padding:20px}.gauge-wrap{height:160px;margin-bottom:4px;position:relative}.gauge-center{text-align:center;pointer-events:none;position:absolute;bottom:2px;left:50%;transform:translate(-50%)}.gauge-pct{font-size:1.6rem;font-weight:800;font-family:var(--calc-font-mono);color:var(--calc-text-primary)}.dose-main{text-align:center;margin-bottom:16px}.dose-val{font-size:2.4rem;font-weight:900;font-family:var(--calc-font-mono);color:var(--calc-text-primary);line-height:1.1}.dose-label{color:var(--calc-text-dim);margin-top:2px;font-size:.8rem}.risk-badge{border-radius:20px;margin-top:6px;padding:4px 14px;font-size:.78rem;font-weight:700;display:inline-block}.risk-low{color:#22d3ee;background:#22d3ee1f;border:1px solid #22d3ee4d}.risk-moderate{color:#f59e0b;background:#f59e0b1f;border:1px solid #f59e0b4d}.risk-high{color:#fb923c;background:#fb923c1f;border:1px solid #fb923c4d}.risk-danger{color:#fb7185;background:#fb71851f;border:1px solid #fb71854d}.safe-times{border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);background:var(--calc-bg-glass);margin:14px 0;padding:12px 14px}.safe-row{justify-content:space-between;align-items:center;padding:3px 0;font-size:.82rem;display:flex}.safe-label{color:var(--calc-text-dim)}.safe-time-val{font-weight:700;font-family:var(--calc-font-mono);color:var(--calc-text-primary)}.protection-rec{border-radius:var(--calc-radius-md);border:1px solid #0000;align-items:flex-start;gap:8px;padding:11px 14px;font-size:.83rem;line-height:1.55;display:flex}.protection-rec.risk-low{color:var(--calc-text-primary);background:#22d3ee12;border-color:#22d3ee33}.protection-rec.risk-moderate{color:var(--calc-text-primary);background:#f59e0b12;border-color:#f59e0b33}.protection-rec.risk-high{color:var(--calc-text-primary);background:#fb923c12;border-color:#fb923c33}.protection-rec.risk-danger{color:var(--calc-text-primary);background:#fb718512;border-color:#fb718533}.prot-icon{flex-shrink:0;font-size:1rem}.action-bar{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.action-btn{background:var(--calc-bg-glass);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);color:var(--calc-text-dim);cursor:pointer;align-items:center;gap:5px;padding:7px 13px;font-family:inherit;font-size:.8rem;font-weight:600;transition:all .18s;display:flex}.action-btn:hover{border-color:var(--accent);color:var(--accent)}.ref-table-wrap{border-radius:var(--calc-radius-md);border:1px solid var(--calc-border-subtle);overflow-x:auto}.ref-table{border-collapse:collapse;width:100%;font-size:.85rem}.ref-table th{background:var(--calc-bg-glass);color:var(--calc-text-dim);text-transform:uppercase;letter-spacing:.05em;text-align:left;border-bottom:1px solid var(--calc-border-subtle);padding:10px 14px;font-size:.74rem;font-weight:700}.ref-table td{border-bottom:1px solid var(--calc-border-subtle);color:var(--calc-text-primary);padding:9px 14px}.ref-table tr:last-child td{border-bottom:none}.ref-table tr:nth-child(2n) td{background:var(--calc-bg-glass)}.ref-table td.db-level{font-family:var(--calc-font-mono);font-size:.9rem;font-weight:700}.ref-table td.niosh-time{font-family:var(--calc-font-mono);color:#22d3ee}.ref-table td.osha-time{font-family:var(--calc-font-mono);color:var(--calc-text-dim)}.ref-table td.danger-row{color:#fb7185;font-weight:600}.ref-table tr.immediate-danger td{background:#fb71850f}.guide-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px;display:grid}.guide-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-lg);padding:18px}.guide-card-icon{margin-bottom:10px;font-size:2rem}.guide-card-title{color:var(--calc-text-primary);margin-bottom:4px;font-size:.88rem;font-weight:700}.guide-card-dose{font-size:.75rem;font-family:var(--calc-font-mono);color:var(--accent);margin-bottom:10px;font-weight:600}.guide-card-body{color:var(--calc-text-dim);font-size:.8rem;line-height:1.6}.guide-nrr-row{border-top:1px solid var(--calc-border-subtle);color:var(--calc-text-dim);margin-top:8px;padding-top:8px;font-size:.77rem}.guide-nrr-val{color:var(--calc-text-primary);font-weight:700;font-family:var(--calc-font-mono)}.compare-callout{background:var(--calc-bg-glass);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);color:var(--calc-text-dim);margin-top:20px;padding:16px;font-size:.83rem;line-height:1.65}.compare-callout strong{color:var(--calc-text-primary)}.page-sections-outer{max-width:1100px;margin:0 auto;padding:0 20px 3rem}.faq-list{flex-direction:column;display:flex}.faq-item{border-bottom:1px solid #ffffff0f}.faq-item__question{cursor:pointer;color:var(--calc-text-primary);user-select:none;justify-content:space-between;align-items:center;padding:14px 4px;font-size:.9rem;font-weight:600;list-style:none;transition:color .2s;display:flex}.faq-item__question::-webkit-details-marker{display:none}.faq-item__question:after{content:"+";font-family:var(--calc-font-mono);color:var(--calc-text-dim);flex-shrink:0;margin-left:16px;font-size:1.1rem;transition:color .2s}.faq-item[open] .faq-item__question:after{content:"−";color:var(--accent)}.faq-item__question:hover{color:var(--accent)}.faq-item__answer{color:var(--calc-text-dim);padding:0 4px 14px;font-size:.85rem;line-height:1.75}@media (width<=768px){.calc-grid,.source-inputs{grid-template-columns:1fr}.custom-db-wrap{grid-column:1}.guide-grid{grid-template-columns:1fr 1fr}}@media (width<=480px){.page-title{font-size:1.55rem}.outer-tab-btn{padding:8px 12px;font-size:.82rem}.dose-val{font-size:1.9rem}.guide-grid{grid-template-columns:1fr}.action-bar{flex-direction:column}}[data-theme=light]{--accent-glow:#0891b21a}[data-theme=light] .page-title{color:#0f172a}[data-theme=light] .outer-tab-btn{color:#64748b}[data-theme=light] .outer-tab-btn:hover{color:#0f172a}[data-theme=light] .outer-tab-btn.active{color:#0891b2;border-bottom-color:#0891b2}[data-theme=light] .preset-chip{color:#475569;background:#fff;border-color:#0000001f}[data-theme=light] .preset-chip:hover{color:#0891b2;border-color:#0891b2}[data-theme=light] .preset-chip.active{color:#0891b2;background:#0891b214;border-color:#0891b2}[data-theme=light] .noise-card,[data-theme=light] .result-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 6px #0000000f}[data-theme=light] .source-block{background:#f8fafc;border-color:#0000001a}[data-theme=light] .glass-input,[data-theme=light] .glass-select{color:#0f172a;background:#f1f5f9;border-color:#00000026}[data-theme=light] .glass-input:focus,[data-theme=light] .glass-select:focus{border-color:#0891b2}[data-theme=light] .glass-select{background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23475569' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E")}[data-theme=light] .add-source-btn{color:#64748b;border-color:#00000026}[data-theme=light] .add-source-btn:hover{color:#0891b2;border-color:#0891b2}[data-theme=light] .safe-times{background:#f8fafc;border-color:#0000001a}[data-theme=light] .safe-label{color:#64748b}[data-theme=light] .safe-time-val{color:#0f172a}[data-theme=light] .risk-low{color:#0891b2;background:#0891b214;border-color:#0891b24d}[data-theme=light] .risk-moderate{color:#b45309;background:#b4530914;border-color:#b453094d}[data-theme=light] .risk-high{color:#c2410c;background:#c2410c14;border-color:#c2410c4d}[data-theme=light] .risk-danger{color:#e11d48;background:#e11d4814;border-color:#e11d484d}[data-theme=light] .protection-rec.risk-low{color:#0f172a;background:#eff9fb;border-color:#0891b240}[data-theme=light] .protection-rec.risk-moderate{color:#0f172a;background:#fffbeb;border-color:#b4530940}[data-theme=light] .protection-rec.risk-high{color:#0f172a;background:#fff7ed;border-color:#c2410c40}[data-theme=light] .protection-rec.risk-danger{color:#0f172a;background:#fff1f2;border-color:#e11d4840}[data-theme=light] .action-btn{color:#475569;background:#f1f5f9;border-color:#0000001f}[data-theme=light] .action-btn:hover{color:#0891b2;border-color:#0891b2}[data-theme=light] .ref-table th{color:#64748b;background:#f8fafc}[data-theme=light] .ref-table td{color:#0f172a;border-bottom-color:#00000012}[data-theme=light] .ref-table tr:nth-child(2n) td{background:#f8fafc}[data-theme=light] .ref-table td.niosh-time{color:#0891b2}[data-theme=light] .ref-table td.osha-time{color:#64748b}[data-theme=light] .ref-table td.danger-row{color:#e11d48}[data-theme=light] .ref-table tr.immediate-danger td{background:#e11d480a}[data-theme=light] .ref-table-wrap{border-color:#0000001a}[data-theme=light] .guide-card{background:#fff;border-color:#0000001a;box-shadow:0 1px 4px #0000000d}[data-theme=light] .guide-card-title{color:#0f172a}[data-theme=light] .guide-card-dose{color:#0891b2}[data-theme=light] .guide-card-body{color:#475569}[data-theme=light] .guide-nrr-row{color:#64748b;border-top-color:#00000014}[data-theme=light] .guide-nrr-val{color:#0f172a}[data-theme=light] .compare-callout{color:#475569;background:#f8fafc;border-color:#0000001a}[data-theme=light] .compare-callout strong{color:#0f172a}[data-theme=light] .faq-list{gap:8px}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;overflow:hidden;box-shadow:0 1px 4px #0000000f}[data-theme=light] .faq-item:hover{border-color:#0891b259}[data-theme=light] .faq-item[open]{border-color:#0891b266 #0891b266 #0891b266 #0891b2;border-left-style:solid;border-left-width:3px}[data-theme=light] .faq-item__question{color:#0f172a;padding:14px 16px}[data-theme=light] .faq-item__question:after{color:#64748b}[data-theme=light] .faq-item[open] .faq-item__question:after,[data-theme=light] .faq-item__question:hover{color:#0891b2}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}[data-theme=light] .gauge-pct,[data-theme=light] .dose-val{color:#0f172a}[data-theme=light] .card-header{color:#0891b2}[data-theme=light] .source-block-header{color:#64748b}