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

.section {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.section:nth-child(even) {
    background: var(--section-gradient);
}

.grid {
    display: grid;
    gap: 24px;
}

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

.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    flex-direction: column;
}

.gap-sm { gap: 8px; }
.gap-md { gap: 16px; }
.gap-lg { gap: 24px; }
.gap-xl { gap: 48px; }

@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }

    .section {
        padding: 80px 0;
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 16px;
        --nav-height: 60px;
    }

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }

    .section {
        padding: 60px 0;
    }

    h1 { font-size: clamp(2rem, 8vw, 3rem); }
    h2 { font-size: clamp(1.75rem, 6vw, 2.25rem); }
}

@media (max-width: 480px) {
    .section {
        padding: 48px 0;
    }
}