.page-choi-co-trach-nhiem__hero-text-section {
    background-color: var(--deep-navy);
    padding: 30px 0 20px;
    color: var(--text-main);
    text-align: center;
}

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

.page-choi-co-trach-nhiem__main-title {
    font-size: clamp(28px, 4vw, 48px);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--gold);
}

.page-choi-co-trach-nhiem__intro-text {
    font-size: 18px;
    line-height: 1.6;
    max-width: 800px;
    margin: 0 auto 30px;
    color: var(--text-secondary);
}

.page-choi-co-trach-nhiem__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
}

.page-choi-co-trach-nhiem__btn-primary,
.page-choi-co-trach-nhiem__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 30px;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: normal;
    word-wrap: break-word;
    box-sizing: border-box;
    max-width: 100%;
}

.page-choi-co-trach-nhiem__btn-primary {
    background: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
    color: var(--text-main);
    border: 2px solid transparent;
}

.page-choi-co-trach-nhiem__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.page-choi-co-trach-nhiem__btn-secondary {
    background: var(--card-bg);
    color: var(--text-main);
    border: 2px solid var(--border-color);
}

.page-choi-co-trach-nhiem__btn-secondary:hover {
    background: var(--deep-navy);
    transform: translateY(-2px);
}

.page-choi-co-trach-nhiem__section {
    padding: 60px 0;
    background-color: var(--deep-navy);
    color: var(--text-main);
}

.page-choi-co-trach-nhiem__section-title {
    font-size: clamp(24px, 3.5vw, 40px);
    font-weight: 700;
    color: var(--gold);
    text-align: center;
    margin-bottom: 40px;
    line-height: 1.3;
}

.page-choi-co-trach-nhiem__principles .page-choi-co-trach-nhiem__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.page-choi-co-trach-nhiem__card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--text-main);
}

.page-choi-co-trach-nhiem__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-choi-co-trach-nhiem__card img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
    object-fit: cover;
}

.page-choi-co-trach-nhiem__card-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--gold);
    margin-bottom: 15px;
}

.page-choi-co-trach-nhiem__card p {
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-secondary);
}

.page-choi-co-trach-nhiem__tools p,
.page-choi-co-trach-nhiem__signs p,
.page-choi-co-trach-nhiem__support p {
    font-size: 17px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 25px;
    text-align: justify;
}

.page-choi-co-trach-nhiem__list {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.page-choi-co-trach-nhiem__list li {
    font-size: 17px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 12px;
    padding-left: 30px;
    position: relative;
    text-align: justify;
}

.page-choi-co-trach-nhiem__list li::before {
    content: '✔';
    color: var(--gold);
    position: absolute;
    left: 0;
    top: 0;
    font-weight: bold;
}

.page-choi-co-trach-nhiem__list li strong {
    color: var(--text-main);
}

.page-choi-co-trach-nhiem__image-block {
    margin: 40px auto;
    max-width: 1000px;
    text-align: center;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.page-choi-co-trach-nhiem__image-block img {
    max-width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.page-choi-co-trach-nhiem__faq-list {
    margin-top: 40px;
}

details.page-choi-co-trach-nhiem__faq-item {
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    background: var(--card-bg);
    color: var(--text-main);
}

details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 20px;
    cursor: pointer;
    user-select: none;
    list-style: none;
    transition: background-color 0.3s ease;
    color: var(--text-main);
}

details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question::-webkit-details-marker {
    display: none;
}

details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question:hover {
    background: #1d3350; /* Slightly lighter version of card-bg for hover */
}

.page-choi-co-trach-nhiem__faq-qtext {
    flex: 1;
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    text-align: left;
    color: var(--text-main);
}

.page-choi-co-trach-nhiem__faq-toggle {
    font-size: 24px;
    font-weight: bold;
    color: var(--gold);
    flex-shrink: 0;
    margin-left: 15px;
    width: 28px;
    text-align: center;
}

details.page-choi-co-trach-nhiem__faq-item .page-choi-co-trach-nhiem__faq-answer {
    padding: 0 20px 20px;
    background: var(--deep-navy);
    border-radius: 0 0 5px 5px;
    color: var(--text-secondary);
}

.page-choi-co-trach-nhiem__faq-answer p {
    margin: 0;
    font-size: 16px;
    line-height: 1.7;
    color: var(--text-secondary);
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
    .page-choi-co-trach-nhiem__main-title {
        font-size: 40px;
    }
    .page-choi-co-trach-nhiem__section-title {
        font-size: 36px;
    }
    .page-choi-co-trach-nhiem__card-title {
        font-size: 22px;
    }
    .page-choi-co-trach-nhiem__intro-text,
    .page-choi-co-trach-nhiem__tools p,
    .page-choi-co-trach-nhiem__signs p,
    .page-choi-co-trach-nhiem__support p,
    .page-choi-co-trach-nhiem__list li {
        font-size: 16px;
    }
    .page-choi-co-trach-nhiem__faq-qtext {
        font-size: 17px;
    }
}

@media (max-width: 768px) {
    .page-choi-co-trach-nhiem__hero-text-section {
        padding-top: 10px; /* Rely on body padding-top from shared.css */
        padding-bottom: 15px;
    }
    .page-choi-co-trach-nhiem__main-title {
        font-size: 32px;
        margin-bottom: 15px;
    }
    .page-choi-co-trach-nhiem__intro-text {
        font-size: 16px;
        margin-bottom: 20px;
    }
    .page-choi-co-trach-nhiem__cta-buttons {
        flex-direction: column;
        gap: 15px;
        margin-top: 20px;
        padding: 0 15px;
    }
    .page-choi-co-trach-nhiem__btn-primary,
    .page-choi-co-trach-nhiem__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 20px;
        font-size: 15px;
        white-space: normal !important;
        word-wrap: break-word !important;
    }
    .page-choi-co-trach-nhiem__section {
        padding: 40px 0;
    }
    .page-choi-co-trach-nhiem__section-title {
        font-size: 28px;
        margin-bottom: 30px;
    }
    .page-choi-co-trach-nhiem__principles .page-choi-co-trach-nhiem__grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    .page-choi-co-trach-nhiem__card {
        padding: 20px;
    }
    .page-choi-co-trach-nhiem__card img {
        max-width: 100% !important;
        height: auto !important;
        width: 100% !important;
    }
    .page-choi-co-trach-nhiem__card-title {
        font-size: 20px;
        margin-bottom: 10px;
    }
    .page-choi-co-trach-nhiem__card p {
        font-size: 15px;
    }
    .page-choi-co-trach-nhiem__tools p,
    .page-choi-co-trach-nhiem__signs p,
    .page-choi-co-trach-nhiem__support p {
        font-size: 16px;
        margin-bottom: 20px;
        padding: 0 15px;
        text-align: left;
    }
    .page-choi-co-trach-nhiem__list {
        margin-bottom: 20px;
        padding: 0 15px;
    }
    .page-choi-co-trach-nhiem__list li {
        font-size: 16px;
        line-height: 1.6;
        margin-bottom: 10px;
        padding-left: 25px;
        text-align: left;
    }
    .page-choi-co-trach-nhiem__list li::before {
        left: 0;
    }
    .page-choi-co-trach-nhiem__image-block {
        margin: 30px auto;
        padding: 0 15px;
    }
    .page-choi-co-trach-nhiem__image-block img {
        max-width: 100% !important;
        height: auto !important;
        width: 100% !important;
    }
    .page-choi-co-trach-nhiem__faq-list {
        margin-top: 30px;
        padding: 0 15px;
    }
    details.page-choi-co-trach-nhiem__faq-item summary.page-choi-co-trach-nhiem__faq-question {
        padding: 15px;
    }
    .page-choi-co-trach-nhiem__faq-qtext {
        font-size: 16px;
    }
    .page-choi-co-trach-nhiem__faq-toggle {
        font-size: 20px;
        margin-left: 10px;
        width: 24px;
    }
    details.page-choi-co-trach-nhiem__faq-item .page-choi-co-trach-nhiem__faq-answer {
        padding: 0 15px 15px;
    }
    .page-choi-co-trach-nhiem__faq-answer p {
        font-size: 15px;
    }
    .page-choi-co-trach-nhiem__container {
        padding: 0;
    }
}