:root {
    --color-primary: #11A84E;
    --color-secondary: #22C768;
    --color-button-gradient-start: #2AD16F;
    --color-button-gradient-end: #13994A;
    --color-card-bg: #11271B;
    --color-background: #08160F;
    --color-text-main: #F2FFF6;
    --color-text-secondary: #A7D9B8;
    --color-border: #2E7A4E;
    --color-glow: #57E38D;
    --color-gold: #F2C14E;
    --color-divider: #1E3A2A;
    --color-deep-green: #0A4B2C;
}

.page-cau-hoi-thuong-gap {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-text-main);
    background-color: var(--color-background);
    padding-bottom: 40px;
}

.page-cau-hoi-thuong-gap__container {
    max-width: 1150px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.page-cau-hoi-thuong-gap__hero-section {
    padding-top: 10px; /* Small top padding, relying on body padding for header offset */
    padding-bottom: 40px;
    text-align: center;
    background-color: var(--color-card-bg);
    border-bottom: 1px solid var(--color-divider);
}

.page-cau-hoi-thuong-gap__main-title {
    font-size: 2.8em;
    font-weight: bold;
    color: var(--color-gold);
    margin-bottom: 15px;
    line-height: 1.2;
    text-shadow: 0 0 8px rgba(242, 193, 78, 0.4);
}

.page-cau-hoi-thuong-gap__description {
    font-size: 1.1em;
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto 30px auto;
}

.page-cau-hoi-thuong-gap__cta-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-cau-hoi-thuong-gap__btn-primary,
.page-cau-hoi-thuong-gap__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    border-radius: 8px;
    font-size: 1.05em;
    font-weight: bold;
    text-decoration: none;
    transition: all 0.3s ease;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    max-width: 250px;
}

.page-cau-hoi-thuong-gap__btn-primary {
    background: linear-gradient(180deg, var(--color-button-gradient-start) 0%, var(--color-button-gradient-end) 100%);
    color: var(--color-text-main);
    border: none;
    box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
}

.page-cau-hoi-thuong-gap__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(42, 209, 111, 0.6);
}

.page-cau-hoi-thuong-gap__btn-secondary {
    background-color: transparent;
    color: var(--color-button-gradient-start);
    border: 2px solid var(--color-button-gradient-start);
    box-shadow: 0 2px 10px rgba(42, 209, 111, 0.2);
}

.page-cau-hoi-thuong-gap__btn-secondary:hover {
    background-color: rgba(42, 209, 111, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(42, 209, 111, 0.4);
}

.page-cau-hoi-thuong-gap__section {
    padding: 60px 0;
    border-bottom: 1px solid var(--color-divider);
}

.page-cau-hoi-thuong-gap__section:last-of-type {
    border-bottom: none;
}

.page-cau-hoi-thuong-gap__section-title {
    font-size: 2.2em;
    color: var(--color-gold);
    text-align: center;
    margin-bottom: 30px;
    text-shadow: 0 0 6px rgba(242, 193, 78, 0.3);
}

.page-cau-hoi-thuong-gap__text-block {
    font-size: 1em;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px auto;
}

.page-cau-hoi-thuong-gap__why-choose {
    background-color: var(--color-background);
}

.page-cau-hoi-thuong-gap__feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-cau-hoi-thuong-gap__feature-item {
    background-color: var(--color-card-bg);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--color-border);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-cau-hoi-thuong-gap__feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.page-cau-hoi-thuong-gap__feature-title {
    font-size: 1.5em;
    color: var(--color-primary);
    margin-bottom: 15px;
}

.page-cau-hoi-thuong-gap__feature-description {
    font-size: 0.95em;
    color: var(--color-text-secondary);
}

.page-cau-hoi-thuong-gap__faq-list {
    background-color: var(--color-background);
}

.page-cau-hoi-thuong-gap__faq-item {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.page-cau-hoi-thuong-gap__faq-item[open] {
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.page-cau-hoi-thuong-gap__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    font-size: 1.15em;
    font-weight: bold;
    color: var(--color-text-main);
    cursor: pointer;
    background-color: var(--color-card-bg);
    position: relative;
    user-select: none;
    list-style: none;
}

.page-cau-hoi-thuong-gap__faq-question::-webkit-details-marker {
    display: none;
}

.page-cau-hoi-thuong-gap__faq-qtext {
    flex-grow: 1;
    color: var(--color-primary);
}

.page-cau-hoi-thuong-gap__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    color: var(--color-gold);
    transition: transform 0.3s ease;
}

.page-cau-hoi-thuong-gap__faq-item[open] .page-cau-hoi-thuong-gap__faq-toggle {
    transform: rotate(45deg);
}

.page-cau-hoi-thuong-gap__faq-answer {
    padding: 0 25px 20px;
    font-size: 1em;
    color: var(--color-text-secondary);
    border-top: 1px solid var(--color-divider);
    margin-top: -1px;
}

.page-cau-hoi-thuong-gap__faq-answer p {
    margin-bottom: 15px;
    color: var(--color-text-secondary);
}

.page-cau-hoi-thuong-gap__faq-answer p:last-child {
    margin-bottom: 0;
}

.page-cau-hoi-thuong-gap__faq-answer a {
    color: var(--color-primary);
    text-decoration: underline;
}

.page-cau-hoi-thuong-gap__faq-answer a:hover {
    color: var(--color-secondary);
}

.page-cau-hoi-thuong-gap img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    margin: 20px auto;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    object-fit: cover;
    filter: none !important; /* Ensure no filter on images */
}

.page-cau-hoi-thuong-gap__figure {
    margin: 20px 0;
    text-align: center;
}

.page-cau-hoi-thuong-gap__figcaption {
    font-size: 0.9em;
    color: var(--color-text-secondary);
    margin-top: 10px;
}

.page-cau-hoi-thuong-gap__contact-support {
    background-color: var(--color-card-bg);
}

.page-cau-hoi-thuong-gap__contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-cau-hoi-thuong-gap__method-item {
    background-color: var(--color-background);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--color-border);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-cau-hoi-thuong-gap__method-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.page-cau-hoi-thuong-gap__method-title {
    font-size: 1.4em;
    color: var(--color-gold);
    margin-bottom: 15px;
}

.page-cau-hoi-thuong-gap__method-description {
    font-size: 0.95em;
    color: var(--color-text-secondary);
    margin-bottom: 25px;
}

.page-cau-hoi-thuong-gap__bottom-cta {
    text-align: center;
    background-color: var(--color-background);
    padding-bottom: 60px;
}

.page-cau-hoi-thuong-gap__btn-large {
    padding: 15px 35px;
    font-size: 1.2em;
    max-width: 350px;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
    /* 1. Top Section Title + Dual CTA */
    .page-cau-hoi-thuong-gap__hero-section {
        padding-top: 10px !important;
        padding-bottom: 30px;
    }

    .page-cau-hoi-thuong-gap__main-title {
        font-size: 2em;
        margin-bottom: 10px;
        padding: 0 10px;
    }

    .page-cau-hoi-thuong-gap__description {
        font-size: 1em;
        margin-bottom: 20px;
        padding: 0 15px;
    }

    .page-cau-hoi-thuong-gap__cta-buttons {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 0 15px;
    }

    .page-cau-hoi-thuong-gap__btn-primary,
    .page-cau-hoi-thuong-gap__btn-secondary {
        max-width: 100% !important;
        width: 100% !important;
        padding: 12px 15px !important;
        font-size: 1em !important;
    }

    /* 2. Single Column Long Text Container */
    .page-cau-hoi-thuong-gap__container {
        padding: 0 15px !important;
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
    }

    .page-cau-hoi-thuong-gap__section {
        padding: 40px 0;
    }

    .page-cau-hoi-thuong-gap__section-title {
        font-size: 1.8em;
        margin-bottom: 20px;
        padding: 0 10px;
    }

    .page-cau-hoi-thuong-gap__text-block {
        font-size: 0.95em;
        margin-bottom: 30px;
        padding: 0 10px;
    }

    /* 3. General Images and Figure */
    .page-cau-hoi-thuong-gap img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        margin: 15px auto !important;
        border-radius: 6px;
    }

    .page-cau-hoi-thuong-gap__figure {
        margin: 15px 0;
    }

    .page-cau-hoi-thuong-gap__figcaption {
        font-size: 0.85em;
        padding: 0 10px;
    }

    /* 4. Buttons and Button Containers */
    .page-cau-hoi-thuong-gap__contact-methods {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
    }

    .page-cau-hoi-thuong-gap__method-item {
        padding: 25px;
    }

    .page-cau-hoi-thuong-gap__method-title {
        font-size: 1.3em;
    }

    .page-cau-hoi-thuong-gap__method-description {
        font-size: 0.9em;
    }

    .page-cau-hoi-thuong-gap__btn-large {
        padding: 12px 20px;
        font-size: 1.1em;
        max-width: 100% !important;
        width: 100% !important;
    }

    /* 5. FAQ Block (details/summary) */
    .page-cau-hoi-thuong-gap__faq-item {
        margin-bottom: 10px;
    }

    .page-cau-hoi-thuong-gap__faq-question {
        padding: 15px 20px;
        font-size: 1em;
    }

    .page-cau-hoi-thuong-gap__faq-qtext {
        font-size: 1em;
    }

    .page-cau-hoi-thuong-gap__faq-toggle {
        font-size: 1.2em;
    }

    .page-cau-hoi-thuong-gap__faq-answer {
        padding: 0 20px 15px;
        font-size: 0.95em;
    }
    
    .page-cau-hoi-thuong-gap__feature-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        padding: 0 15px;
    }
}