/* ============================================
      ABOUT SECTION
      ============================================ */
.about {
    padding: var(--section-padding) 0;
    background: var(--bg-primary);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.about-intro .lead {
    font-size: 1.25rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.about-intro p {
    color: var(--text-secondary);
    font-size: 1.05rem;
}

.about-formula {
    background: linear-gradient(135deg, var(--purple-50), var(--white));
    border: 1px solid var(--purple-200);
    border-radius: var(--radius-2xl);
    padding: 2.5rem;
    margin-bottom: 3rem;
}

.about-formula h3 {
    text-align: center;
    font-size: 1.1rem;
    color: var(--purple-800);
    margin-bottom: 2rem;
    font-weight: 600;
}

.formula-cards {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.formula-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    background: var(--white);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    min-width: 160px;
    flex: 1;
    max-width: 200px;
    transition: var(--transition-base);
}

.formula-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-purple);
}

.formula-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--purple-500), var(--purple-700));
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.formula-icon i {
    color: var(--white);
    font-size: 1.25rem;
}

.formula-card span {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.formula-plus {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--purple-400);
}

.about-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    background: var(--gray-50);
    border-radius: var(--radius-lg);
    border-left: 3px solid var(--purple-500);
}

.info-item i {
    color: var(--purple-600);
    font-size: 1.1rem;
    margin-top: 0.2rem;
}

.info-item div {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.info-item strong {
    color: var(--text-primary);
}