.main-container{max-width:1400px;margin:0 auto;padding:40px 20px}.page-header{margin-bottom:20px}.page-title{font-family:var(--calc-font-headline);color:var(--calc-text-primary);letter-spacing:-.02em;margin:0 0 8px;font-size:clamp(1.7rem,3.5vw,2.4rem);font-weight:800}.page-subtitle{color:var(--calc-text-dim);max-width:70ch;margin:0;font-size:1rem;line-height:1.6}.calc-grid{grid-template-columns:minmax(0,1fr) minmax(0,1.05fr);align-items:start;gap:24px;display:grid}@media (width<=1024px){.calc-grid{grid-template-columns:1fr}}.card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-lg);padding:20px 22px}.card-title{font-family:var(--calc-font-headline);text-transform:uppercase;letter-spacing:.04em;color:var(--calc-text-faded);margin:0 0 16px;font-size:.95rem;font-weight:700}.form-group{flex-direction:column;gap:6px;margin-bottom:14px;display:flex}.form-group label{color:var(--calc-text-faded);font-size:.88rem}.form-group input,.form-group select{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);border-radius:var(--calc-radius-md);color:var(--calc-text-primary);font-family:var(--calc-font-mono);padding:10px 12px;font-size:1rem}.form-group input:focus,.form-group select:focus{border-color:var(--calc-cyan);outline:none}.input-row{grid-template-columns:1fr 1fr;gap:14px;display:grid}@media (width<=480px){.input-row{grid-template-columns:1fr}}#imperial-group,#metric-group{margin-top:4px}.hero-result{text-align:center;border-bottom:1px solid var(--calc-border-subtle);margin-bottom:12px;padding-bottom:12px}.hero-label{text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-dim);margin-bottom:6px;font-size:.82rem}.hero-value{font-family:var(--calc-font-mono);color:var(--calc-cyan);font-size:clamp(2rem,5vw,2.8rem);font-weight:800;line-height:1.1}.hero-sub{color:var(--calc-text-dim);margin-top:6px;font-size:.9rem}.stat-grid{grid-template-columns:repeat(2,1fr);gap:12px;margin:16px 0;display:grid}.stat-cell{border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);text-align:center;background:#ffffff08;padding:10px 12px}.stat-val{font-family:var(--calc-font-mono);color:var(--calc-text-primary);font-size:1.15rem;font-weight:700}.stat-label{color:var(--calc-text-dim);margin-top:2px;font-size:.72rem}.interp-panel{border-radius:var(--calc-radius-md);background:#fb923c12;border:1px solid #fb923c38;border-left:3px solid #fb923c;margin-top:14px;padding:14px 16px}.interp-text{color:var(--calc-text-faded);margin:0;font-size:.9rem;line-height:1.65}[data-scenario-compare]{margin-top:4px}.table-note{color:var(--calc-text-dim);margin:4px 0 14px;font-size:.85rem;line-height:1.6}.table-note a{color:var(--calc-cyan)}.current-row{background:#fb923c14}.sens-result{border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);background:#ffffff08;margin-top:18px;padding:16px}.sens-headline{font-family:var(--calc-font-headline);color:var(--calc-text-primary);font-size:1.4rem;font-weight:800}.sens-detail{color:var(--calc-text-dim);margin-top:6px;font-size:.88rem;line-height:1.55}.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:.92rem;font-weight:600;list-style:none;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}.faq-item[open] .faq-item__question:after{content:"−";color:#c2410c}.faq-item__answer{color:var(--calc-text-dim);padding:0 4px 14px;font-size:.86rem;line-height:1.75}[data-theme=light] .page-subtitle{color:#475569}[data-theme=light] .card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .card-title{color:#64748b}[data-theme=light] .form-group label{color:#475569}[data-theme=light] .form-group input,[data-theme=light] .form-group select{color:#0f172a;background:#f0f4f9;border-color:#00000026}[data-theme=light] .hero-result{border-bottom-color:#00000014}[data-theme=light] .hero-label{color:#64748b}[data-theme=light] .hero-sub{color:#475569}[data-theme=light] .hero-value{color:#0891b2}[data-theme=light] .stat-cell{background:#f0f4f9;border-color:#0000001a}[data-theme=light] .stat-val{color:#0f172a}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .interp-panel{background:#fffbeb;border-color:#c2410c4d #c2410c4d #c2410c4d #c2410c}[data-theme=light] .interp-text{color:#334155}[data-theme=light] .table-note{color:#475569}[data-theme=light] .table-note a{color:#0891b2}[data-theme=light] .current-row{background:#c2410c14}[data-theme=light] .sens-result{background:#f0f4f9;border-color:#0000001f}[data-theme=light] .sens-headline{color:#0f172a}[data-theme=light] .sens-detail{color:#475569}[data-theme=light] .faq-item__question{color:#0f172a}[data-theme=light] .faq-item__question:after{color:#64748b}[data-theme=light] .faq-item[open] .faq-item__question:after{color:#c2410c}[data-theme=light] .faq-item__answer{color:#475569}@media print{.action-bar,.tab-bar,.glass-navbar,.calc-back-to-top,.nav-toggle{display:none}}