/* Sections */
section {
    padding: 100px 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: 70px;
    position: relative;
}

.section-title h2 {
    font-size: 3rem;
    display: inline-block;
    position: relative;
    font-weight: 700;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 5px;
    background: var(--gradient);
    border-radius: 3px;
    animation: lineGrow 1.5s ease;
}

@keyframes lineGrow {
    from { width: 0; }
    to { width: 100px; }
}