.main-container{max-width:1400px;margin:0 auto;padding:1.5rem 1.5rem 3rem}.page-title{font-family:var(--calc-font-headline);color:var(--calc-text-primary);margin:0 0 .5rem;font-size:clamp(1.6rem,4vw,2.4rem)}.page-subtitle{color:var(--calc-text-faded);max-width:70ch;margin:0 0 2rem;line-height:1.5}.calc-layout{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:start;gap:1.5rem;display:grid}.input-card,.result-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-lg);padding:1.25rem 1.5rem}.card-title{font-family:var(--calc-font-headline);text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-faded);margin:0 0 1rem;font-size:1rem}.form-group{flex-direction:column;gap:.4rem;margin-bottom:1.25rem;display:flex}.form-group label{color:var(--calc-text-faded);font-size:.9rem}.form-group input{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);transition:var(--calc-transition-default,border-color .15s);padding:.65rem .85rem;font-size:1.05rem}.form-group input:focus{border-color:var(--calc-cyan);outline:none}.input-hint{color:var(--calc-text-dim);font-size:.8rem;line-height:1.5}.input-hint code{background:var(--calc-bg-input);font-family:var(--calc-font-mono);border-radius:4px;padding:0 .3em}.field{margin-bottom:.5rem}.field-label{color:var(--calc-text-faded);margin-bottom:.5rem;font-size:.85rem;display:block}.solve-row{flex-wrap:wrap;gap:.5rem;display:flex}.solve-chip{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);border-radius:var(--calc-radius-md);color:var(--calc-text-faded);cursor:pointer;padding:.45rem .9rem;font-size:.85rem;transition:border-color .15s,color .15s,background .15s}.solve-chip:hover{color:var(--calc-text-primary);border-color:var(--calc-cyan)}.solve-chip.active{background:var(--calc-cyan-dim,#22d3ee1f);border-color:var(--calc-cyan);color:var(--calc-cyan)}.result-value{font-family:var(--calc-font-mono);color:var(--calc-cyan);word-break:break-word;margin-bottom:.3rem;font-size:clamp(1.4rem,3.6vw,2rem)}.result-detail{color:var(--calc-text-faded);margin-bottom:1rem;line-height:1.5}.panel-hint{color:var(--calc-text-faded);margin:.75rem 0;font-size:.85rem;line-height:1.5}.scenario-compare{flex-wrap:wrap;align-items:center;gap:1rem;margin:1rem 0;display:flex}.scenario-col{background:var(--calc-bg-input);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);flex:1;min-width:200px;padding:.85rem 1rem}.scenario-col--balanced{border-color:var(--calc-cyan)}.scenario-label{text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-dim);margin-bottom:.4rem;font-size:.75rem;display:block}.scenario-value{font-family:var(--calc-font-mono);color:var(--calc-text-primary);word-break:break-word;font-size:1.05rem}.scenario-col--balanced .scenario-value{color:var(--calc-cyan)}.scenario-arrow{color:var(--calc-text-dim);flex-shrink:0;font-size:1.2rem}.stat-grid{grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:.6rem;margin:1rem 0;display:grid}.stat-cell{background:var(--calc-bg-input);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);flex-direction:column;gap:.2rem;padding:.6rem .8rem;display:flex}.stat-cell--warn{border-color:var(--calc-rose)}.stat-label{text-transform:uppercase;letter-spacing:.04em;color:var(--calc-text-dim);font-size:.75rem}.stat-value{font-family:var(--calc-font-mono);color:var(--calc-text-primary);font-size:.95rem}.stat-cell--warn .stat-value{color:var(--calc-rose)}.steps-list{color:var(--calc-text-faded);flex-direction:column;gap:.5rem;margin:1rem 0;padding-left:1.25rem;line-height:1.7;display:flex}.steps-list li{padding-left:.25rem}.steps-list strong{color:var(--calc-text-primary)}.interpretation{color:var(--calc-text-faded);border-top:1px solid var(--calc-border-subtle);margin-top:1rem;padding-top:1rem;font-size:.9rem;line-height:1.6}.interpretation--warn{color:var(--calc-rose)}.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(--calc-cyan)}.faq-item__question:hover{color:var(--calc-cyan)}.faq-item__answer{color:var(--calc-text-dim);padding:0 4px 14px;font-size:.85rem;line-height:1.75}@media (width<=1024px){.calc-layout{grid-template-columns:1fr}}[data-theme=light] .input-card,[data-theme=light] .result-card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .form-group input,[data-theme=light] .solve-chip,[data-theme=light] .scenario-col,[data-theme=light] .stat-cell{background:#f0f4f9;border-color:#00000026}[data-theme=light] .input-hint code{background:#e8eef4}[data-theme=light] .solve-chip{color:#475569}[data-theme=light] .solve-chip:hover{color:#0f172a;border-color:#0891b2}[data-theme=light] .solve-chip.active{color:#0891b2;background:#0891b21a;border-color:#0891b2}[data-theme=light] .result-value,[data-theme=light] .scenario-col--balanced .scenario-value{color:#0891b2}[data-theme=light] .scenario-col--balanced{border-color:#0891b2}[data-theme=light] .stat-cell--warn{border-color:#e11d48}[data-theme=light] .stat-cell--warn .stat-value,[data-theme=light] .interpretation--warn{color:#e11d48}[data-theme=light] .faq-list{gap:8px}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;transition:box-shadow .2s,border-color .2s;overflow:hidden;box-shadow:0 1px 4px #0000000f}[data-theme=light] .faq-item:hover{border-color:#0891b259;box-shadow:0 2px 10px #0891b214}[data-theme=light] .faq-item[open]{border-color:#0891b266 #0891b266 #0891b266 #0891b2;border-left-style:solid;border-left-width:3px;box-shadow:0 2px 12px #0891b21a}[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}