.page-choi-co-trach-nhiem {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #1F2D3D; /* Text Main */
    background-color: #F4F7FB; /* Background */
}

.page-choi-co-trach-nhiem__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 15px;
}

/* Hero Section */
.page-choi-co-trach-nhiem__hero-section {
    display: flex;
    flex-direction: column; /* Default to column for mobile first, then row for desktop */
    align-items: center;
    text-align: center;
    padding-top: 10px; /* Small top padding, body has main header offset */
    padding-bottom: 40px;
    background: linear-gradient(180deg, #6FA3FF 0%, #2F6BFF 100%); /* Using brand colors */
    color: #ffffff;
    position: relative;
    overflow: hidden;
}

.page-choi-co-trach-nhiem__hero-content {
    max-width: 800px;
    margin-bottom: 30px;
    z-index: 2;
}

.page-choi-co-trach-nhiem__main-title {
    font-size: clamp(2.2rem, 4vw, 3rem); /* H1 with clamp for responsive font size */
    margin-bottom: 20px;
    font-weight: bold;
    line-height: 1.2;
    letter-spacing: -0.5px;
    color: #ffffff;
}

.page-choi-co-trach-nhiem__description {
    font-size: 1.15rem;
    margin-bottom: 30px;
    color: #f0f8ff;
}

.page-choi-co-trach-nhiem__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap; /* Allow buttons to wrap on smaller screens */
    width: 100%; /* Ensure container takes full width */
    max-width: 100%;
    box-sizing: border-box;
    padding: 0 15px;
}

.page-choi-co-trach-nhiem__btn-primary,
.page-choi-co-trach-nhiem__btn-secondary {
    display: inline-block;
    padding: 14px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1rem;
    transition: all 0.3s ease;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-choi-co-trach-nhiem__btn-primary {
    background: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%); /* Button gradient */
    color: #ffffff;
    border: 2px solid transparent;
}

.page-choi-co-trach-nhiem__btn-primary:hover {
    background: linear-gradient(180deg, #2F6BFF 0%, #4A8BFF 100%);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-choi-co-trach-nhiem__btn-secondary {
    background: #ffffff; /* Card BG */
    color: #2F6BFF; /* Primary color */
    border: 2px solid #2F6BFF;
}

.page-choi-co-trach-nhiem__btn-secondary:hover {
    background: #e0f0ff;
    color: #2F6BFF;
    border-color: #2F6BFF;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.page-choi-co-trach-nhiem__hero-image-container {
    width: 100%;
    max-width: 100%;
    margin-top: 30px; /* Space between content and image */
    z-index: 1;
}

.page-choi-co-trach-nhiem__hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

/* General Section Styles */
.page-choi-co-trach-nhiem__section-title {
    font-size: 2.2rem;
    color: #1F2D3D; /* Text Main */
    text-align: center;
    margin-bottom: 40px;
    font-weight: bold;
    line-height: 1.3;
}

.page-choi-co-trach-nhiem__text-block {
    font-size: 1.05rem;
    margin-bottom: 30px;
    text-align: justify;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

/* Card Styles */
.page-choi-co-trach-nhiem__card {
    background-color: #FFFFFF; /* Card BG */
    border: 1px solid #D6E2FF; /* Border */
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    height: 100%; /* Ensure cards in grid have equal height */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-choi-co-trach-nhiem__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.page-choi-co-trach-nhiem__card-title {
    font-size: 1.4rem;
    color: #2F6BFF; /* Primary color */
    margin-bottom: 15px;
    font-weight: bold;
}

.page-choi-co-trach-nhiem__card p {
    font-size: 0.95rem;
    color: #1F2D3D; /* Text Main */
    flex-grow: 1;
}

/* Principles Section */
.page-choi-co-trach-nhiem__principles-section {
    padding: 60px 0;
}

.page-choi-co-trach-nhiem__principles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

/* Signs Section */
.page-choi-co-trach-nhiem__signs-section {
    padding: 60px 0;
    background: #2F6BFF; /* Primary color */
    color: #ffffff;
}

.page-choi-co-trach-nhiem__signs-section .page-choi-co-trach-nhiem__section-title {
    color: #ffffff;
}

.page-choi-co-trach-nhiem__signs-section .page-choi-co-trach-nhiem__text-block {
    color: #f0f8ff;
}

.page-choi-co-trach-nhiem__signs-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.page-choi-co-trach-nhiem__sign-item {
    background-color: rgba(255, 255, 255, 0.1); /* Semi-transparent white */
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.page-choi-co-trach-nhiem__sign-icon {
    width: 100%;
    max-width: 250px; /* Constrain icon size */
    height: auto;
    margin-bottom: 20px;
    border-radius: 8px;
    object-fit: cover;
}

.page-choi-co-trach-nhiem__sign-title {
    font-size: 1.3rem;
    color: #ffffff;
    margin-bottom: 10px;
    font-weight: bold;
}

.page-choi-co-trach-nhiem__sign-item p {
    font-size: 0.95rem;
    color: #f0f8ff;
    flex-grow: 1;
}

.page-choi-co-trach-nhiem__cta-center {
    text-align: center;
    margin-top: 40px;
}

/* Tools Section */
.page-choi-co-trach-nhiem__tools-section {
    padding: 60px 0;
}

.page-choi-co-trach-nhiem__tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.page-choi-co-trach-nhiem__tool-item {
    background-color: #FFFFFF; /* Card BG */
    border: 1px solid #D6E2FF; /* Border */
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.page-choi-co-trach-nhiem__tool-image {
    width: 100%;
    max-width: 400px; /* Constrain image size */
    height: auto;
    margin-bottom: 20px;
    border-radius: 8px;
    object-fit: cover;
}

.page-choi-co-trach-nhiem__tool-title {
    font-size: 1.4rem;
    color: #2F6BFF; /* Primary color */
    margin-bottom: 15px;
    font-weight: bold;
}

.page-choi-co-trach-nhiem__tool-item p {
    font-size: 0.95rem;
    color: #1F2D3D; /* Text Main */
    flex-grow: 1;
}

/* Advice Section */
.page-choi-co-trach-nhiem__advice-section {
    padding: 60px 0;
    background: #6FA3FF; /* Secondary color */
    color: #ffffff;
}

.page-choi-co-trach-nhiem__advice-section .page-choi-co-trach-nhiem__section-title {
    color: #ffffff;
}