.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}}.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-label-static{color:var(--calc-text-faded);margin-bottom:7px;font-size:.82rem;font-weight:600;display:block}.preset-lead{font-family:var(--calc-font-mono);text-transform:uppercase;letter-spacing:.06em;color:var(--calc-text-dim);align-self:center;margin-right:4px;font-size:.72rem}.preset-row{flex-wrap:wrap;gap:8px;margin-top:14px;display:flex}.preset-chip{color:var(--calc-text-faded);background:var(--calc-surface-raised,#ffffff08);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);cursor:pointer;padding:7px 12px;font-size:.8rem;font-weight:600;transition:background .15s,color .15s,border-color .15s}.preset-chip:hover{border-color:var(--calc-cyan)}.preset-chip.active{color:#04222b;background:var(--calc-cyan);border-color:var(--calc-cyan)}.mode-chips{flex-wrap:wrap;gap:8px;display:flex}.mode-chip{text-align:center;min-width:90px;color:var(--calc-text-faded);background:var(--calc-surface-raised,#ffffff08);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);cursor:pointer;flex:auto;padding:9px 12px;font-size:.84rem;font-weight:600;transition:background .15s,color .15s,border-color .15s}.mode-chip:hover{border-color:var(--calc-cyan)}.mode-chip.active{color:#04222b;background:var(--calc-cyan);border-color:var(--calc-cyan)}.chart-wrap{margin:18px 0 6px}.form-group.hidden{display:none}.interp-panel{background:var(--calc-accent-soft,#22d3ee0f);border:1px solid var(--calc-accent-border,#22d3ee38);border-left:3px solid var(--calc-cyan);border-radius:var(--calc-radius-md);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-cyan)}.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,[data-theme=light] .preset-lead{color:#64748b}[data-theme=light] .form-label-static{color:#334155}[data-theme=light] .preset-chip{color:#475569;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .preset-chip:hover{border-color:#0891b2}[data-theme=light] .preset-chip.active{color:#fff;background:#0891b2;border-color:#0891b2}[data-theme=light] .mode-chip{color:#475569;background:#f0f4f9;border-color:#0000001f}[data-theme=light] .mode-chip:hover{border-color:#0891b2}[data-theme=light] .mode-chip.active{color:#fff;background:#0891b2;border-color:#0891b2}[data-theme=light] .interp-panel{background:#eff9fb;border-color:#0891b24d #0891b24d #0891b24d #0891b2}[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:#0891b2}[data-theme=light] .faq-item__answer{color:#475569}@media print{.action-bar,.tab-bar,.preset-row,.glass-navbar,.calc-back-to-top,.nav-toggle{display:none}}