.introduction-page,
.introduction-detail {
    color: var(--web-body-text, #1f2937);
    background: var(--web-body-background, #ffffff);
}

.introduction-page__header,
.introduction-detail__header {
    padding: 38px 0 34px;
    background: #f4f7fb;
    border-bottom: 1px solid #dbe3ec;
}

.introduction-breadcrumb {
    display: flex;
    align-items: center;
    gap: 9px;
    margin-bottom: 18px;
    color: #64748b;
    font-size: 14px;
}

.introduction-breadcrumb a {
    color: var(--web-link-text, #2563eb);
    text-decoration: none;
}

.introduction-breadcrumb i {
    font-size: 10px;
}

.introduction-page__header h1,
.introduction-detail__header h1 {
    margin: 0;
    color: var(--web-title-text, #0f172a);
    font-family: var(--web-title-font-family, inherit);
    font-size: min(var(--web-title-font-size, 38px), 42px);
    line-height: 1.2;
    letter-spacing: 0;
}

.introduction-page__lead,
.introduction-detail__header p {
    max-width: 820px;
    margin: 16px 0 0;
    color: #526174;
    font-size: 17px;
    line-height: 1.75;
}

.introduction-page__content {
    padding-top: 48px;
    padding-bottom: 64px;
}

.introduction-page__summary {
    padding: 26px 0;
    border-bottom: 1px solid #e5eaf0;
    background: #ffffff;
}

.introduction-page__summary .introduction-page__lead {
    width: 100%;
    max-width: none;
    margin: 0;
    color: #526174;
    font-size: 15px;
    line-height: 1.7;
}

.introduction-page__summary .introduction-page__lead > :first-child {
    margin-top: 0;
}

.introduction-page__summary .introduction-page__lead > :last-child {
    margin-bottom: 0;
}

.introduction-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 24px;
}

.introduction-card {
    min-width: 0;
    overflow: hidden;
    background: #ffffff;
    border: 1px solid #dbe3ec;
    border-radius: 8px;
}

.introduction-card__media {
    display: block;
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: #e8edf3;
}

.introduction-card__media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.introduction-card:hover .introduction-card__media img {
    transform: scale(1.035);
}

.introduction-card__body {
    padding: 20px;
}

.introduction-card__body > span {
    display: block;
    margin-bottom: 8px;
    color: #15803d;
    font-size: 13px;
    font-weight: 700;
}

.introduction-card h2 {
    margin: 0 0 10px;
    font-size: 20px;
    line-height: 1.35;
    letter-spacing: 0;
}

.introduction-card h2 a {
    color: var(--web-heading-text, #111827);
    text-decoration: none;
}

.introduction-card p {
    margin: 0 0 18px;
    color: #64748b;
    line-height: 1.7;
    font-size: 14px;
}

.introduction-card__link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--web-link-text, #2563eb);
    font-weight: 700;
    text-decoration: none;
}

.introduction-pagination {
    margin-top: 34px;
}

.introduction-empty {
    padding: 44px 0;
    color: #64748b;
    text-align: center;
}

.introduction-detail__layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 42px;
    padding-top: 48px;
    padding-bottom: 68px;
}
.introduction-detail__layout--no-sidebar {
    grid-template-columns: minmax(0, 1fr);
}

.introduction-detail__main {
    min-width: 0;
}

.introduction-detail__image {
    margin: 0 0 30px;
    overflow: hidden;
    border-radius: 8px;
}

.introduction-detail__image img {
    display: block;
    width: 100%;
    height: auto;
}

.introduction-detail__body {
    font-family: var(--web-content-font-family, inherit);
    font-size: var(--web-content-font-size, 16px);
    line-height: 1.8;
}

.introduction-detail__body img {
    max-width: 100%;
    height: auto;
}

.introduction-detail__sidebar {
    display: grid;
    gap: 18px;
    align-self: start;
}

.introduction-sidebar-block,
.introduction-related {
    padding: 20px;
    border: 1px solid #dbe3ec;
    border-radius: 8px;
    background: #ffffff;
}

.introduction-sidebar-block h2,
.introduction-related h2 {
    margin: 0 0 18px;
    font-size: 20px;
    letter-spacing: 0;
}

.introduction-sidebar-block__content {
    color: #526174;
    font-size: 14px;
    line-height: 1.75;
}

.introduction-sidebar-block__content > :first-child {
    margin-top: 0;
}

.introduction-sidebar-block__content > :last-child {
    margin-bottom: 0;
}

.introduction-related > a {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    padding: 12px 0;
    color: var(--web-heading-text, #111827);
    font-weight: 650;
    line-height: 1.4;
    text-decoration: none;
    border-bottom: 1px solid #e5eaf0;
}

.introduction-related img {
    width: 72px;
    height: 54px;
    object-fit: cover;
    border-radius: 4px;
}

@media (max-width: 900px) {
    .introduction-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .introduction-detail__layout {
        grid-template-columns: 1fr;
    }

    .introduction-detail__sidebar {
        order: 2;
    }
}

@media (max-width: 600px) {
    .introduction-page__header,
    .introduction-detail__header {
        padding: 28px 0;
    }

    .introduction-grid {
        grid-template-columns: 1fr;
    }

    .introduction-page__content,
    .introduction-detail__layout {
        padding-top: 34px;
        padding-bottom: 48px;
    }

    .introduction-breadcrumb {
        flex-wrap: wrap;
    }
}