:root {
    --main-color: #74ACDD;
    --accent-color: #7fc8c2;
    --bento-bg: #f7f5ee;
    --bento-border: #e5e2d9;
    --bento-hover: #e6f4f2;
    --text-color: #333;
}

.grid-section {
    padding: 5%;
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 2.5rem;
    background: var(--bento-bg);
    color: var(--text-color);
}

.grid-section .introduction_title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: baseline;
    white-space: nowrap;
    gap: 0.5rem;
}

.grid-section .introduction_title img {
    width: 10rem;
    height: auto;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
    padding: 1.5rem 0;
    background: var(--bento-bg);
}

.feature-cards .card {
    border: 2px solid var(--bento-border);
    box-shadow: 0 2px 8px rgba(116, 172, 221, 0.08);
    border-radius: 18px;
    padding: 2rem 1.5rem;
    background: #fff;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    gap: 1.2em;
    color: var(--text-color);
}

.feature-cards .card:hover {
    transform: translateY(-6px) scale(1.02);
    border-color: var(--accent-color);
    box-shadow: 0 6px 18px rgba(127, 200, 194, 0.15);
    background: var(--bento-hover);
}

.card-button {
    display: inline-block;
    margin-top: 1.5em;
    padding: 10px 18px;
    background-color: var(--main-color);
    color: #fff;
    text-align: center;
    border-radius: 12px;
    text-decoration: none;
    font-weight: bold;
    border: 2px solid var(--main-color);
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
}

.feature-cards .card:hover .card-button {
    background-color: var(--bento-hover);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

.download-section {}

.download-text {}

.download-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8em;
    padding: 12px 24px;
    font-size: 1.1rem;
    font-weight: 600;
}

@media (max-width: 768px) {
    .grid-section {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 6% 3%;
    }

    .feature-cards {
        grid-template-columns: 1fr;
        gap: 1.2rem;
        padding: 1rem 0;
    }

    .feature-cards .card {
        padding: 1.2rem 1rem;
        border-radius: 14px;
        font-size: 0.98rem;
    }

    .card-button,
    .download-button {
        padding: 10px 12px;
        font-size: 1rem;
        border-radius: 10px;
    }

    .download-icon {
        font-size: 1.15em;
    }
}

@media (max-width: 480px) {
    .grid-section {
        padding: 5% 2%;
        gap: 1rem;
    }

    .feature-cards {
        grid-template-columns: 1fr;
        gap: 0.8rem;
        padding: 0.5rem 0;
    }

    .feature-cards .card {
        padding: 0.8rem 0.5rem;
        border-radius: 10px;
        font-size: 0.95rem;
    }

    .card-button,
    .download-button {
        padding: 8px 8px;
        font-size: 0.95rem;
        border-radius: 8px;
    }

    .download-icon {
        font-size: 1.1em;
    }
}

.download-button:active {
    background-color: var(--bento-hover);
    color: var(--accent-color);
    transform: translateY(0);
}

.download-label {
    margin-right: 12px;
}

.download-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3em;
    line-height: 1;
}

.download-label {}


@media (max-width: 768px) {
    .download-section {}

    .download-button {}


}

@media (max-width: 480px) {
    .download-section {}

    .download-button {}

    .download-icon {}
}