body {
    background-color: var(--color-bg-primary);
}

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.container-narrow {
    max-width: var(--container-narrow);
}

.section {
    padding: var(--spacing-3xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-2xl);
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--color-primary);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--radius-full);
}

.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
    .grid-5 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .grid-3, .grid-4, .grid-5 { grid-template-columns: repeat(2, 1fr); }
    .grid-2 { grid-template-columns: 1fr; }
    .section { padding: var(--spacing-2xl) 0; }
    .section-title { font-size: var(--font-size-2xl); }
}

@media (max-width: 480px) {
    .grid-3, .grid-4, .grid-5 { grid-template-columns: 1fr; }
    .container { padding: 0; }
}