:root {
    --is-teal: #377E9A;
    --is-green: #5B8137;
    --is-text: #333333;
    --is-text-light: #555555;
    --is-bg: #f0f4f3;
    --is-white: #ffffff;
    --is-radius: 0 26px 26px 26px;
    --is-font: "Rubik", sans-serif;
    --is-font-sub: "Merriweather", serif;
    --font-light: 300;
    --font-regular: 400;
    --font-semibold: 500;
    --font-bold: 700;
    --container: 1330px;
    --btn-green: #68a422;
}

.impact-stories {
    padding: 60px 24px;
    background: var(--is-bg);
    font-family: var(--is-font);
}

.is-container {
    max-width: var(--container);
    margin: 0 auto;
}

/* Heading */
.is-heading {
    text-align: center;
    font-size: clamp(28px, 4vw, 40px);
    color: var(--is-green);
    font-weight: var(--font-regular);
    margin-bottom: 48px;
    letter-spacing: -0.5px;
    font-family: var(--is-font-sub);
}

    .is-heading strong {
        color: var(--is-teal);
        font-weight: var(--font-bold);
        font-family: var(--is-font) !important;
    }

/* 3-col grid */
.is-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 50px;
}

/* Card */
.is-card {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* Image */
.is-card__img-wrap {
    border-radius: var(--is-radius);
    overflow: hidden;
    aspect-ratio: 4 / 5;
    width: 100%;
}

.is-card__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    display: block;
    transition: transform 0.4s ease;
}

.is-card:hover .is-card__img {
    transform: scale(1.03);
}

/* Body */
.is-card__body {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 0 4px;
}

.is-card__title {
    font-size: 25px;
    font-weight: var(--font-bold);
    color: var(--is-teal);
    margin: 0;
}

.is-card__summary {
    font-size: 18px;
    line-height: 1.6;
    color: var(--is-text-light);
    margin: 0;
}

/* Know More button */
.is-card__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 6px;
    padding: 6px 33px;
    background-color: var(--btn-green);
    color: var(--is-white);
    text-decoration: none;
    font-size: 20px;
    font-weight: var(--font-regular);
    border-radius: 50px;
    align-self: flex-start;
    transition: background-color 0.2s ease, transform 0.2s ease;
}

    .is-card__btn:hover {
        background-color: var(--is-green);
        transform: translateY(-1px);
        color: var(--is-white);
    }

/* Responsive */
@media (max-width: 900px) {
    .is-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .is-grid {
        grid-template-columns: 1fr;
    }
    .impact-stories {
        padding-left: 50px;
        padding-right: 50px;
    }
}