.hero-section {
    background: linear-gradient(
        -14deg,
        var(--color-text-main),
        var(--color-primary)
    );
    padding: var(--space-xl) 0;
    color: var(--color-text-secondary);
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-lg);
}

.hero-title {
    color: white;
    margin-top: 0;
    margin-bottom: var(--space-sm);
}

.hero-subtext {
    font-size: 1.15rem;
    line-height: 1.6;
    max-width: 500px;
    margin-bottom: var(--space-lg);
    color: rgba(255, 255, 255, 0.8);
}

.hero-image {
    max-width: 450px;
    height: auto;
}

.illustration-img {
    width: 100%;
    height: auto;
}
.stack-intro-section {
    padding: var(--space-xl) 0;
    background-color: var(--color-background);
    border-bottom: 1px solid #e2e8f0;
}

.stack-intro-content {
    display: flex;
    flex-direction: column-reverse;
    align-items: center;
    gap: var(--space-lg);
    text-align: center;
}

.stack-intro-text {
    max-width: 700px;
}

.stack-intro-visual {
    max-width: 300px;
    margin: 0 auto;
}

.layer-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    text-align: left;
}

.layer-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.layer-color-block {
    border-radius: 4px;
    margin-top: 0.5rem;
    width: 30px;
    height: 30px;
}

.blue-block {
    background-color: var(--color-secondary);
}

.green-block {
    background-color: var(--color-accent);
}

.yellow-block {
    background-color: var(--color-layer-yellow);
}

.layer-title {
    margin: 0;
    font-size: 1.2rem;
    color: var(--color-primary);
    width: 120px;
}

.layer-item p {
    margin: 0;
    color: var(--color-text-main);
    width: calc(100% - 202px);
}

.summary-section {
    background-color: var(--color-background);
    padding: var(--space-xl) 0;
}

.section-subheading {
    text-align: center;
    font-size: 1.15rem;
    max-width: 700px;
    margin: 0 auto var(--space-xl);
    color: var(--color-text-main);
}

.summary-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.quick-win-section {
    padding: var(--space-xl) 0;
    background-color: white;
}

.quick-win-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
    text-align: center;
}

.quick-win-text {
    max-width: 600px;
}

.key-points-list {
    text-align: left;
    margin: var(--space-md) auto;
    font-size: 1.1rem;
    padding-left: 0;
}

.key-points-list li {
    padding: var(--space-xs) 0;
    position: relative;
    padding-left: 20px;
    color: var(--color-text-main);
}

.key-points-list li::before {
    content: '•';
    color: var(--color-accent);
    position: absolute;
    left: 0;
    font-size: 1.2em;
    line-height: 1;
    animation: blink 1.5s infinite alternate;
}
.cta-banner-section {
    background-color: var(--color-primary);
    border-bottom: 1px solid #e2e8f01f;
    padding: var(--space-xl) 0;
    text-align: center;
    color: var(--color-primary);
}

.cta-content {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.cta-title {
    color: oklch(100% 0.00011 271.152);
    font-size: 2rem;
    margin-top: 0;
}

.cta-subtext {
    font-size: 1.25rem;
    margin-bottom: var(--space-lg);
    color: oklch(100% 0.00011 271.152 / 0.8);
}
@media (min-width: 768px) {
    .stack-intro-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }

    .stack-intro-text {
        flex-basis: 60%;
    }

    .stack-intro-visual {
        flex-basis: 30%;
        margin: 0;
    }

    .layer-list {
        gap: var(--space-md);
    }
    .summary-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-md);
    }
}

@media (min-width: 992px) {
    .hero-section {
        padding: 6rem 0;
    }

    .hero-content {
        flex-direction: row;
        text-align: left;
        justify-content: space-between;
        gap: 5%;
    }

    .hero-text {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-xs);
        flex-basis: 50%;
        max-width: 50%;
    }

    .hero-image {
        flex-basis: 40%;
        margin-left: auto;
    }

    .hero-title {
        font-size: 2.6rem;
    }
    .quick-win-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }

    .quick-win-text,
    .quick-win-image {
        flex-basis: 48%;
    }

    .quick-win-text {
        order: 1;
    }

    .quick-win-image {
        order: 2;
    }

    .key-points-list {
        margin-left: 0;
    }
}