:root{--accent:var(--calc-cyan);--accent-dim:#22d3ee26}[data-theme=light]{--accent:#0891b2;--accent-dim:#0891b21a}.main-container{max-width:1400px;margin:0 auto;padding:40px 20px}.page-title{font-family:var(--calc-font-headline);color:var(--calc-text-primary);margin:0 0 .4rem;font-size:clamp(1.7rem,4vw,2.5rem);font-weight:800}.page-subtitle{color:var(--calc-text-faded);max-width:820px;margin:0 0 1.5rem;line-height:1.55}.page-subtitle strong{color:var(--calc-text-primary);font-family:var(--calc-font-mono)}.action-bar{flex-wrap:wrap;gap:.5rem;margin:0 0 1.5rem;display:flex}.action-btn{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);color:var(--calc-text-faded);cursor:pointer;padding:.5rem .9rem;font-size:.85rem;transition:border-color .15s,color .15s,background .15s}.action-btn:hover{border-color:var(--accent);color:var(--accent)}.action-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.action-btn--reset{margin-left:auto}.calc-layout{grid-template-columns:1.15fr .85fr;align-items:start;gap:1.5rem;display:grid}@media (width<=1024px){.calc-layout{grid-template-columns:1fr}}.input-card,.result-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-lg);margin-bottom:1.25rem;padding:1.25rem 1.5rem}.card-title{font-family:var(--calc-font-headline);text-transform:uppercase;letter-spacing:.08em;color:var(--calc-text-faded);margin:0 0 1rem;font-size:.78rem}.tab-control{flex-wrap:wrap;gap:.4rem;margin-bottom:1rem;display:flex}.tab-btn{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-md);min-width:100px;color:var(--calc-text-faded);cursor:pointer;flex:1;padding:.6rem .5rem;font-size:.88rem;font-weight:600;transition:border-color .15s,color .15s,background .15s}.tab-btn:hover{color:var(--calc-text-primary)}.tab-btn.active{background:var(--accent-dim);border-color:var(--accent);color:var(--accent)}.tab-btn:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.tab-panel[hidden]{display:none}.panel-hint{color:var(--calc-text-dim);margin:.5rem 0 1rem;font-size:.85rem;line-height:1.5}.panel-hint strong{color:var(--calc-text-faded);font-family:var(--calc-font-mono)}.input-hint{color:var(--calc-text-dim);margin-top:.5rem;font-size:.8rem;display:block}.form-group{flex-direction:column;gap:.4rem;margin-bottom:1rem;display:flex}.form-group[hidden]{display:none}.form-group label{color:var(--calc-text-faded);font-size:.9rem}.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);box-sizing:border-box;width:100%;padding:.65rem .85rem;font-size:1.05rem;transition:border-color .15s}.form-group input:focus,.form-group select:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-dim);outline:none}.result-value{font-family:var(--calc-font-mono);color:var(--accent);margin-bottom:.35rem;font-size:clamp(1.7rem,5vw,2.4rem);font-weight:700;line-height:1.1}.result-value--partial,.result-value--idle{color:var(--calc-text-dim)}.result-detail{color:var(--calc-text-faded);font-size:.92rem;line-height:1.5}.interpretation{background:var(--accent-dim);border-left:3px solid var(--accent);border-radius:0 var(--calc-radius-md) var(--calc-radius-md) 0;color:var(--calc-text-faded);margin:1.25rem 0 0;padding:.85rem 1rem;font-size:.9rem;line-height:1.6}.interpretation:empty{display:none}.calc-section{margin-top:2rem}.calc-section__title{font-family:var(--calc-font-headline);color:var(--calc-text-primary);margin-bottom:1rem;font-size:1.2rem}.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:.95rem;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);margin-left:16px;font-size:1.1rem}.faq-item[open] .faq-item__question:after{content:"−";color:var(--accent)}.faq-item__answer{color:var(--calc-text-faded);padding:0 4px 14px;font-size:.88rem;line-height:1.7}[data-theme=light] .page-subtitle strong{color:#0f172a}[data-theme=light] .action-btn,[data-theme=light] .tab-btn{color:#475569;background:#fff;border-color:#0000001f}[data-theme=light] .action-btn:hover{border-color:var(--accent);color:var(--accent)}[data-theme=light] .tab-btn:hover{color:#0f172a}[data-theme=light] .tab-btn.active{background:var(--accent-dim);border-color:var(--accent);color:var(--accent)}[data-theme=light] .input-card,[data-theme=light] .result-card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .panel-hint strong{color:#0f172a}[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] .result-value{color:var(--accent)}[data-theme=light] .result-value--partial,[data-theme=light] .result-value--idle{color:#64748b}[data-theme=light] .interpretation{border-left-color:var(--accent);color:#334155;background:#eff9fb}[data-theme=light] .faq-item{background:#fff;border:1px solid #0000001a;border-radius:10px;margin-bottom:8px;overflow:hidden;box-shadow:0 1px 4px #0000000f}[data-theme=light] .faq-item[open]{border-left:3px solid var(--accent)}[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{color:var(--accent)}[data-theme=light] .faq-item__answer{color:#475569;border-top:1px solid #0000000f;padding:12px 16px 16px}@media (width<=768px){.tab-control{flex-wrap:nowrap;overflow-x:auto}.tab-btn{flex:none;min-width:9rem}.input-card,.result-card{padding:1rem}}