.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(1.6rem,4vw,2.4rem)}.page-subtitle{color:var(--calc-text-faded);max-width:70ch;margin:0 0 2rem;line-height:1.5}.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:.05em;color:var(--calc-text-faded);margin:0 0 1rem;font-size:1rem}.form-row{grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:1.25rem;display:grid}.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}[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] .form-group select{background:#f0f4f9;border-color:#00000026}.tab-strip{border-bottom:1px solid var(--calc-border-default);flex-wrap:wrap;gap:.25rem;margin-bottom:1.25rem;display:flex}.tab-btn{appearance:none;color:var(--calc-text-faded);cursor:pointer;font-family:var(--calc-font-headline);background:0 0;border:none;border-bottom:2px solid #0000;padding:.7rem 1rem;font-size:.95rem;font-weight:600;transition:color .15s,border-color .15s}.tab-btn:hover{color:var(--calc-text-primary)}.tab-btn.active{color:var(--calc-cyan);border-bottom-color:var(--calc-cyan)}[data-theme=light] .tab-btn.active{color:#0891b2;border-bottom-color:#0891b2}.preset-row{flex-wrap:wrap;gap:.5rem;margin-bottom:1.25rem;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:.4rem .85rem;font-size:.82rem;transition:border-color .15s,color .15s,background .15s}.preset-chip:hover{border-color:var(--calc-cyan);color:var(--calc-cyan)}[data-theme=light] .preset-chip{color:#334155;background:#eef2f9;border-color:#00000024}[data-theme=light] .preset-chip:hover{color:#0891b2;border-color:#0891b2}.result-value{font-family:var(--calc-font-mono);color:var(--calc-cyan);margin-bottom:.3rem;font-size:clamp(2rem,6vw,3rem);line-height:1.1}.result-detail{color:var(--calc-text-faded);line-height:1.6}[data-theme=light] .result-value{color:#0891b2}.stat-grid{grid-template-columns:repeat(3,1fr);gap:.75rem;margin:1.1rem 0 0;display:grid}.stat-grid[hidden]{display:none}.stat-cell{background:var(--calc-bg-input);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);flex-direction:column;gap:.25rem;padding:.7rem .85rem;display:flex}.stat-cell[hidden]{display:none}.stat-label{text-transform:uppercase;letter-spacing:.05em;color:var(--calc-text-dim);font-size:.72rem;font-family:var(--calc-font-headline)}.stat-value{font-family:var(--calc-font-mono);color:var(--calc-text-primary);font-size:1.1rem}[data-theme=light] .stat-cell{background:#edf2f9;border-color:#0000001a}[data-theme=light] .stat-value{color:#0f172a}.interpretation{border-radius:var(--calc-radius-md);background:var(--calc-bg-input);border:1px solid var(--calc-border-subtle);color:var(--calc-text-faded);margin:1.1rem 0 0;padding:.85rem 1rem;font-size:.88rem;line-height:1.6}[data-theme=light] .interpretation{color:#475569;background:#f0f4f9;border-color:#0000001a}.action-bar{flex-wrap:wrap;gap:.5rem;margin-bottom:1.25rem;display:flex}.action-btn{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:.5rem .9rem;font-size:.85rem;transition:border-color .15s,color .15s}.action-btn:hover{border-color:var(--calc-cyan);color:var(--calc-cyan)}[data-theme=light] .action-btn{color:#334155;background:#eef2f9;border-color:#00000024}[data-theme=light] .action-btn:hover{color:#0891b2;border-color:#0891b2}.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-faded);padding:0 4px 14px;font-size:.85rem;line-height:1.75}[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}@media (width<=600px){.form-row,.stat-grid{grid-template-columns:1fr}.tab-btn{flex:1;padding:.7rem .4rem;font-size:.8rem}}.result-meta{color:var(--calc-text-dim);margin-top:.8rem;font-size:.82rem}.history-panel{border-top:1px solid var(--calc-border-subtle);margin-top:1.25rem;padding-top:1rem}.history-panel h3{color:var(--calc-text-faded);text-transform:uppercase;letter-spacing:.04em;margin:0 0 .6rem;font-size:.82rem}.history-list{gap:.35rem;margin:0;padding-left:1.2rem;display:grid}.history-item{color:var(--calc-text-faded);cursor:pointer;text-align:left;background:0 0;border:0;padding:.25rem}.history-item:hover,.history-item:focus-visible{color:var(--calc-cyan)}.form-group input:focus-visible,.form-group select:focus-visible,.tab-btn:focus-visible,.preset-chip:focus-visible,.action-btn:focus-visible,.history-item:focus-visible{outline:3px solid var(--calc-cyan);outline-offset:2px}@media (width<=768px){.main-container{padding:28px 16px}.action-bar{grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.action-btn{min-height:44px;padding-inline:.45rem}.tab-strip{flex-wrap:nowrap;overflow-x:auto}.tab-btn{white-space:nowrap;flex:none;min-height:44px}}@media (prefers-reduced-motion:reduce){.result-card,.tab-btn,.action-btn,.preset-chip{transition:none}}@media print{.glass-navbar,.action-bar,.tab-strip,.preset-row,.history-panel,.foot,.calc-back-to-top{display:none!important}.main-container{max-width:none;padding:0}.input-card,.result-card{box-shadow:none;break-inside:avoid}}