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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);color:var(--calc-text-primary);margin:0 0 1rem;font-size:1rem;font-weight:700}.mixed-input-row{grid-template-columns:1fr .8fr 1fr;align-items:end;gap:1rem;display:grid}.form-group{flex-direction:column;gap:.4rem;display:flex}.form-group label{color:var(--calc-text-faded);font-size:.9rem;font-weight:600}.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);width:100%;padding:.7rem .9rem;font-size:1.1rem;transition:border-color .15s,box-shadow .15s}.form-group input:focus,.form-group select:focus{border-color:var(--calc-cyan);outline:none;box-shadow:0 0 0 3px #22d3ee26}.form-group select option{background-color:var(--calc-bg-card);color:var(--calc-text-primary)}.input-hint{color:var(--calc-text-dim);margin-top:.9rem;font-size:.82rem;line-height:1.45;display:block}.mode-tabs{border-bottom:1px solid var(--calc-border-subtle);flex-wrap:wrap;gap:.4rem;margin-bottom:1.25rem;padding-bottom:.25rem;display:flex}.mode-tab{border-radius:var(--calc-radius-md) var(--calc-radius-md) 0 0;color:var(--calc-text-faded);font-family:var(--calc-font-headline);cursor:pointer;background:0 0;border:1px solid #0000;padding:.6rem 1.1rem;font-size:.92rem;font-weight:600;transition:color .15s,background .15s,border-color .15s}.mode-tab:hover{color:var(--calc-text-primary)}.mode-tab.active{color:var(--calc-cyan);background:var(--calc-bg-card);border-color:var(--calc-border-default);border-bottom-color:#0000}.calc-panel{display:none}.calc-panel.active{display:block}.result-card{background:var(--calc-bg-card);border:1px solid var(--calc-border-default);border-radius:var(--calc-radius-lg);text-align:center;margin-bottom:1rem;padding:1.5rem 1.75rem}.result-value{font-family:var(--calc-font-mono);color:var(--calc-cyan);word-break:break-word;font-size:clamp(2.1rem,6vw,3rem);font-weight:700;line-height:1.1}.result-detail{color:var(--calc-text-faded);margin-top:.6rem;font-size:.9rem;line-height:1.5}.interpretation{background:var(--calc-bg-glass);border:1px solid var(--calc-border-subtle);border-left:3px solid var(--calc-cyan);border-radius:var(--calc-radius-md);color:var(--calc-text-primary);min-height:1.1em;margin:0;padding:.85rem 1.1rem;font-size:.95rem;line-height:1.55}.panel-help{color:var(--calc-text-faded);margin:0 0 1rem;font-size:.9rem;line-height:1.55}.table-scroll{overflow-x:auto}.convert-table{border-collapse:collapse;width:100%;font-family:var(--calc-font-mono);min-width:480px;font-size:.95rem}.convert-table th,.convert-table td{text-align:center;border-bottom:1px solid var(--calc-border-subtle);padding:.6rem .8rem}.convert-table thead th{color:var(--calc-text-faded);background:var(--calc-bg-glass);font-size:.8rem;font-weight:700}.convert-table tbody th{color:var(--calc-text-faded);text-align:left;font-weight:600}.convert-table td{color:var(--calc-text-primary);font-weight:600}.step-list{counter-reset:step-counter;flex-direction:column;gap:.6rem;margin:0;padding:0;list-style:none;display:flex}.step-list li{counter-increment:step-counter;font-family:var(--calc-font-mono);color:var(--calc-text-primary);background:var(--calc-bg-glass);border:1px solid var(--calc-border-subtle);border-radius:var(--calc-radius-md);padding:.6rem .9rem .6rem 2.4rem;font-size:.92rem;line-height:1.6;position:relative}.step-list li:before{content:counter(step-counter);color:var(--calc-cyan);font-weight:700;position:absolute;top:.6rem;left:.7rem}.page-sections-outer{max-width:1100px;margin:0 auto;padding:0 1.5rem 3rem}.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;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:.88rem;line-height:1.75}@media (width<=640px){.mixed-input-row{grid-template-columns:1fr}.action-btn--reset{margin-left:0}}[data-theme=light] .action-btn,[data-theme=light] .input-card,[data-theme=light] .result-card{background:#fff;border-color:#0000001f;box-shadow:0 1px 4px #0000000f}[data-theme=light] .action-btn:hover{color:#0891b2;border-color:#0891b2}[data-theme=light] .form-group input,[data-theme=light] .form-group select{background:#f0f4f9;border-color:#00000026}[data-theme=light] .form-group select option{color:#0f172a;background-color:#fff}[data-theme=light] .form-group input:focus,[data-theme=light] .form-group select:focus{border-color:#0891b2;box-shadow:0 0 0 3px #0891b226}[data-theme=light] .mode-tab.active{color:#0891b2;background:#fff;border-color:#0000001f #0000001f #0000}[data-theme=light] .result-value{color:#0891b2}[data-theme=light] .interpretation{color:#0f172a;background:#eff9fb;border-color:#00000014 #00000014 #00000014 #0891b2}[data-theme=light] .convert-table thead th{color:#334155;background:#eef2f8}[data-theme=light] .convert-table tbody th{color:#475569}[data-theme=light] .convert-table td{color:#0f172a}[data-theme=light] .step-list li{color:#0f172a;background:#f0f4f9;border-color:#0000001a}[data-theme=light] .step-list li:before{color:#0891b2}[data-theme=light] .faq-item__question{color:#0f172a}[data-theme=light] .faq-item__question:hover,[data-theme=light] .faq-item[open] .faq-item__question:after{color:#0891b2}[data-theme=light] .faq-item__answer{color:#475569}