/* 百分比计算器专题页 */

/* Tab 切换 */
.pct-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.pct-tab {
    padding: 0.4rem 1rem;
    border: 1px solid #e0e0e0;
    border-radius: 20px;
    background: #fff;
    color: #666;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.pct-tab.active {
    background: #2563eb;
    color: #fff;
    border-color: #2563eb;
}

.pct-tab:hover:not(.active) {
    border-color: #2563eb;
    color: #2563eb;
}

.pct-panel {
    /* shown/hidden via JS */
}

.pct-desc {
    padding: 0.6rem 1rem;
    background: #f0f4ff;
    border-radius: 6px;
    font-size: 0.88rem;
    color: #555;
    margin-bottom: 1rem;
}

.pct-form {
    grid-template-columns: 1fr 1fr;
}

/* 结果框 */
.pct-result {
    margin-top: 1rem;
    padding: 1.2rem 1.5rem;
    background: #f0f4ff;
    border-radius: 10px;
    font-size: 1rem;
    color: #333;
    line-height: 1.8;
}

.pct-result .pct-main-val {
    font-size: 2rem;
    font-weight: 700;
    font-family: 'Fira Code', monospace;
    color: #2563eb;
}

/* 公式列表 */
.formula-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.formula-row {
    display: grid;
    grid-template-columns: 180px 1fr 1fr;
    gap: 1rem;
    align-items: center;
    padding: 0.8rem 1rem;
    background: #f8f9fb;
    border-radius: 8px;
    border: 1px solid #e8eaf0;
}

.formula-name {
    font-weight: 600;
    color: #333;
    font-size: 0.9rem;
}

.formula-expr {
    font-family: 'Fira Code', monospace;
    font-size: 0.88rem;
    color: #2563eb;
}

.formula-example {
    font-size: 0.85rem;
    color: #888;
}

@media (max-width: 700px) {
    .pct-form {
        grid-template-columns: 1fr;
    }
    .formula-row {
        grid-template-columns: 1fr;
    }
    .formula-expr, .formula-example {
        padding-left: 0.5rem;
    }
}