.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 .5rem;font-size:clamp(1.7rem,4vw,2.5rem);font-weight:700}.page-subtitle{color:var(--calc-text-faded);max-width:70ch;margin:0 0 1.75rem;line-height:1.6}.action-bar{flex-wrap:wrap;gap:.5rem;margin-bottom: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);font-family:var(--calc-font-mono);cursor:pointer;padding:.5rem .85rem;font-size:.85rem;transition:border-color .15s,color .15s,background .15s}.action-btn:hover{border-color:var(--calc-cyan);color:var(--calc-cyan)}.action-btn:focus-visible{outline:2px solid var(--calc-cyan);outline-offset:2px}.tab-bar{border-bottom:1px solid var(--calc-border-subtle);flex-wrap:wrap;gap:.4rem;margin-bottom:1.25rem;padding-bottom:.6rem;display:flex}.tab-btn{border-radius:var(--calc-radius-md);color:var(--calc-text-faded);font-family:var(--calc-font-headline);cursor:pointer;background:0 0;border:1px solid #0000;padding:.55rem 1rem;font-size:.92rem;font-weight:600;transition:background .15s,color .15s}.tab-btn:hover{color:var(--calc-text-primary)}.tab-btn.active{background:var(--calc-cyan);color:#04121a}.tab-btn:focus-visible{outline:2px solid var(--calc-cyan);outline-offset:2px}.tab-panel{display:none}.tab-panel.active{display:block}.calc-grid{grid-template-columns:1fr 1fr;align-items:start;gap:1.25rem;display:grid}.input-card,.result-card,.viz-card,.interp-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:.05em;color:var(--calc-text-faded);margin:0 0 1rem;font-size:.95rem}.preset-row{flex-wrap:wrap;gap:.45rem;margin-bottom:1rem;display:flex}.preset-chip{background:var(--calc-bg-input);border:1px solid var(--calc-border-strong);color:var(--calc-text-faded);cursor:pointer;border-radius:999px;padding:.35rem .8rem;font-size:.82rem;transition:border-color .15s,color .15s,background .15s}.preset-chip:hover{border-color:var(--calc-cyan);color:var(--calc-cyan)}.preset-chip:focus-visible{outline:2px solid var(--calc-cyan);outline-offset:2px}.form-grid{flex-direction:column;gap:1rem;display:flex}.form-group{flex-direction:column;gap:.4rem;display:flex}.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);padding:.65rem .85rem;font-size:1.05rem;transition:border-color .15s}.form-group input:focus,.form-group select:focus{border-color:var(--calc-cyan);outline:none}.input-hint{color:var(--calc-text-dim);font-size:.8rem;line-height:1.4}.note-line{background:var(--calc-bg-glass,#22d3ee14);border:1px solid var(--calc-border-subtle);border-left:3px solid var(--calc-cyan);border-radius:var(--calc-radius-md);color:var(--calc-text-faded);margin-top:1rem;padding:.7rem .9rem;font-size:.82rem;line-height:1.5}.result-value{font-family:var(--calc-font-headline);color:var(--calc-cyan);word-break:break-word;margin-bottom:.3rem;font-size:clamp(1.9rem,5vw,2.8rem);font-weight:700;line-height:1.15}.result-detail{color:var(--calc-text-faded);margin-bottom:1rem;line-height:1.5}.stat-grid{grid-template-columns:repeat(3,1fr);gap:.6rem;margin-top:.5rem;display:grid}.stat-cell{background:var(--calc-bg-input);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);flex-direction:column;gap:.2rem;padding:.6rem .7rem;display:flex}.stat-label{text-transform:uppercase;letter-spacing:.04em;color:var(--calc-text-dim);font-size:.72rem}.stat-value{font-family:var(--calc-font-mono);color:var(--calc-text-primary);font-size:1.05rem}.viz-card .week-strip{width:100%;height:auto;display:block}.ws-cell{fill:var(--calc-bg-input);stroke:var(--calc-border-subtle);stroke-width:1px}.ws-cell--weekend{fill:var(--calc-bg-glass,#a855f712)}.ws-cell--active{fill:var(--calc-cyan);stroke:var(--calc-cyan)}.ws-label{fill:var(--calc-text-faded);font-family:var(--calc-font-mono);font-size:16px}.ws-label--active{fill:#04121a;font-weight:700}.ws-sub{fill:#04121a;font-size:12px}.interp-card p{color:var(--calc-text-faded);margin:0;line-height:1.6}.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}.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-faded);padding:0 4px 14px;font-size:.85rem;line-height:1.75}@media (width<=1024px){.calc-grid{grid-template-columns:1fr}}@media (width<=480px){.stat-grid{grid-template-columns:1fr}.ws-label{font-size:13px}}[data-theme=light] .action-btn{color:#334155;background:#fff;border-color:#0000001f}[data-theme=light] .action-btn:hover{color:#0891b2;border-color:#0891b2}[data-theme=light] .tab-btn{color:#475569}[data-theme=light] .tab-btn:hover{color:#0f172a}[data-theme=light] .tab-btn.active{color:#fff;background:#0891b2}[data-theme=light] .input-card,[data-theme=light] .result-card,[data-theme=light] .viz-card,[data-theme=light] .interp-card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[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:#0891b2}[data-theme=light] .preset-chip{color:#334155;background:#f0f4f9;border-color:#00000026}[data-theme=light] .preset-chip:hover{color:#0891b2;border-color:#0891b2}[data-theme=light] .result-value{color:#0891b2}[data-theme=light] .stat-cell{background:#edf2f9;border-color:#0000001a}[data-theme=light] .stat-label{color:#64748b}[data-theme=light] .stat-value{color:#0f172a}[data-theme=light] .note-line{color:#334155;background:#eff9fb;border-color:#0891b24d #0891b24d #0891b24d #0891b2}[data-theme=light] .ws-cell{fill:#edf2f9;stroke:#0000001a}[data-theme=light] .ws-cell--weekend{fill:#e7ecf5}[data-theme=light] .ws-cell--active{fill:#0891b2;stroke:#0891b2}[data-theme=light] .ws-label{fill:#475569}[data-theme=light] .ws-label--active,[data-theme=light] .ws-sub{fill:#fff}[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,[data-theme=light] .faq-item__question:hover{color:#0891b2}[data-theme=light] .faq-item__answer{color:#475569}