* {
    margin: 0;
    padding: 0;
}

body {
    background-color: #f8f8f8;
    color: #333;
}

.customer_service_container {
    width: 100%;
    max-width: 1300px;
    margin: 0 auto;
    padding: 0;
}

/* Banner Image Styling */
.banner-container {
    width: 100%;
    position: relative;
    overflow: hidden;
    height: 320px;
    margin-bottom: 60px;
}

.banner-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.8); /* ¹à±â Áõ°¡ */
}

/* ¿À¹ö·¹ÀÌ ¼öÁ¤ - ¹à±â Áõ°¡ */
.banner-container::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.3));
    z-index: 0;
}

.banner-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: white;
    width: 80%;
    max-width: 800px;
    z-index: 2;
    padding: 30px;
    background-color: transparent; /* ¹è°æ Á¦°Å */
    border-radius: 10px;
}

.banner-text h1 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
    letter-spacing: -0.5px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5); /* ±×¸²ÀÚ °¨¼Ò */
}

.banner-text p {
    font-size: 18px;
    font-weight: 400;
    opacity: 1;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5); /* ±×¸²ÀÚ °¨¼Ò */
}

/* Card Container Styling */
.card-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    padding: 0 20px 60px;
}

.card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    display: flex;
    align-items: center;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 10px rgba(0, 0, 0, 0.05);
}

.card-icon {
    background-color: #f2f7ff;
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
    flex-shrink: 0;
}

.card-content {
    flex-grow: 1;
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #222;
}

.card-description {
    font-size: 15px;
    color: #666;
    line-height: 1.4;
}

.card-arrow {
    color: #bbb;
    font-size: 24px;
    font-weight: 300;
    margin-left: 15px;
}

@media (max-width: 768px) {
    .card-container {
        grid-template-columns: 1fr;
    }
    
    .banner-text h1 {
        font-size: 28px;
    }
    
    .banner-text p {
        font-size: 16px;
    }
}