.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:72ch;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);margin-bottom:20px;padding:20px 24px}.card-title{font-family:var(--calc-font-headline);text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-faded);margin:0 0 14px;font-size:.85rem}.field-hint{color:var(--calc-text-dim);margin:6px 0 0;font-size:.78rem;line-height:1.5}.card-title+.field-hint{margin:-4px 0 14px}.form-group{flex-direction:column;gap:.4rem;margin-bottom:14px;display:flex}.form-group label{color:var(--calc-text-faded);font-size:.85rem}.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:.65rem .85rem;font-size:1.05rem;transition:border-color .15s}.form-group input:focus,.form-group select:focus{border-color:var(--calc-color-automotive);outline:none}.hero-result{text-align:left;margin-bottom:18px}.hero-label{color:var(--calc-text-faded);margin-bottom:6px;font-size:.85rem}.hero-value{font-family:var(--calc-font-mono);color:var(--calc-color-automotive);font-size:clamp(2rem,5vw,2.8rem);font-weight:700;line-height:1.1}.hero-sub.result-detail{color:var(--calc-text-faded);margin-top:6px;line-height:1.5}.stat-grid{grid-template-columns:repeat(2,1fr);gap:10px;margin:8px 0 4px;display:grid}.stat-cell{border:1px solid var(--calc-border-default);text-align:center;background:#ffffff08;border-radius:8px;padding:12px}.stat-val{font-family:var(--calc-font-mono);color:var(--calc-text-primary);margin-bottom:4px;font-size:1.05rem;font-weight:700}.stat-label{color:var(--calc-text-dim);font-size:.7rem;line-height:1.3}.table-note{color:var(--calc-text-dim);margin:4px 0 14px;font-size:.85rem;line-height:1.6}.interp-panel{border:1px solid #38bdf838;border-left:3px solid var(--calc-color-automotive);border-radius:var(--calc-radius-md);background:#38bdf80f;margin-top:14px;padding:14px 16px}.interp-text{color:var(--calc-text-faded);margin:0;font-size:.9rem;line-height:1.65}.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:var(--calc-color-automotive)}.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] .field-hint{color:#64748b}[data-theme=light] .table-note{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:#334155}[data-theme=light] .form-group input,[data-theme=light] .form-group select{color:#0f172a;background:#f0f4f9;border-color:#00000026}[data-theme=light] .form-group input:focus,[data-theme=light] .form-group select:focus{border-color:#0369a1}[data-theme=light] .hero-label{color:#475569}[data-theme=light] .hero-value{color:#0369a1}[data-theme=light] .hero-sub.result-detail{color:#475569}[data-theme=light] .stat-cell{background:#f0f4f9;border-color:#0000001f}[data-theme=light] .stat-val{color:#0f172a}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .interp-panel{background:#eff9fb;border-color:#0369a14d #0369a14d #0369a14d #0369a1}[data-theme=light] .interp-text{color:#334155}[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:#0369a1}[data-theme=light] .faq-item__answer{color:#475569}@media print{.action-bar,.tab-bar,.glass-navbar,.calc-back-to-top,.nav-toggle{display:none}}