.quick-links {
    padding: 40px 20px;
    overflow: visible;
}

.quick-links .container {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
    overflow: visible;
}

.quick-link-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 220px;
    text-decoration: none;
    transition: transform 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    position: relative;
    cursor: pointer;
}

.quick-link-card:hover {
    transform: translateY(-6px);
}

.quick-link-card .color-block {
    width: 100%;
    height: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    background-size: cover;
    background-position: center;
}

.quick-link-card .color-block .card-icon {
    font-size: 44px;
    color: #ffffff;
}

.quick-link-card .card-body {
    width: 100%;
    background-color: #ffffff;
    padding: 18px 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.quick-link-card .card-title {
    color: #333333;
    font-size: 18px;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 10px;
    white-space: nowrap;
}

.quick-link-card .card-underline {
    width: 36px;
    height: 3px;
    background-color: #001488;
}

/* 下拉菜单 */
.card-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #ffffff;
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
    border-top: 2px solid #001488;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease;
    z-index: 999;
}

.quick-link-card:hover .card-dropdown,
.quick-link-card.dropdown-open .card-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.quick-link-card.dropdown-open,
.quick-link-card:hover {
    z-index: 998;
}

.card-dropdown a {
    display: block;
    padding: 12px 18px;
    color: #333333;
    font-size: 14px;
    text-decoration: none;
    transition: color 0.3s ease, background-color 0.3s ease;
    border-bottom: 1px solid #f0f0f0;
}

.card-dropdown a:last-child {
    border-bottom: none;
}

.card-dropdown a:hover {
    color: #001488;
    background-color: #f0f3ff;
}

@media screen and (max-width: 992px) {
    .quick-links {
        padding: 30px 15px;
    }

    .quick-links .container {
        gap: 20px;
    }

    .quick-link-card {
        width: 200px;
    }

    .quick-link-card .color-block {
        height: 120px;
    }

    .quick-link-card .color-block .card-icon {
        font-size: 36px;
    }

    .quick-link-card .card-body {
        padding: 15px 12px;
    }

    .quick-link-card .card-title {
        font-size: 16px;
    }
}

@media screen and (max-width: 768px) {
    .quick-link-card {
        width: calc(50% - 10px);
    }

    .quick-link-card .color-block {
        height: 100px;
    }

    .quick-link-card .card-title {
        font-size: 15px;
    }

    .card-dropdown a {
        padding: 10px 14px;
        font-size: 13px;
    }
}

@media screen and (max-width: 480px) {
    .quick-links {
        padding: 25px 10px;
    }

    .quick-links .container {
        gap: 12px;
    }

    .quick-link-card {
        width: calc(50% - 6px);
    }

    .quick-link-card .color-block {
        height: 120px;
    }

    .quick-link-card .color-block .card-icon {
        font-size: 28px;
    }

    .quick-link-card .card-body {
        padding: 10px 8px;
    }

    .quick-link-card .card-title {
        font-size: 14px;
        margin-bottom: 6px;
    }

    .quick-link-card .card-underline {
        width: 24px;
        height: 2px;
    }

    .card-dropdown a {
        padding: 9px 12px;
        font-size: 12px;
    }
}