:root {
    --deep-navy: #08162B;
    --main-blue: #113B7A;
    --accent-blue: #1D5FD1;
    --gold: #F2C14E;
    --text-main: #F3F8FF;
    --text-secondary: #AFC4E8;
    --card-bg: #10233F;
    --border: #244D84;
    --glow: #4FA8FF;
    --divider: #1B3357;
    --button-gradient: linear-gradient(180deg, #2B73F6 0%, #1144A6 100%);
}

.page-khuyen-mai {
    font-family: Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--deep-navy);
    line-height: 1.6;
}

.page-khuyen-mai__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.page-khuyen-mai__section-title {
    color: var(--gold);
    text-align: center;
    margin-bottom: 40px;
    font-size: 2.5rem;
    font-weight: 700;
}

.page-khuyen-mai__text-block {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    font-size: 1rem;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

/* HERO Section */
.page-khuyen-mai__hero-section {
    padding-top: 10px; /* Small top padding, relying on body padding for header offset */
    background: linear-gradient(180deg, var(--deep-navy) 0%, var(--main-blue) 100%);
    padding-bottom: 60px;
}

.page-khuyen-mai__hero-image-wrapper {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-khuyen-mai__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.page-khuyen-mai__hero-content {
    max-width: 800px;
    margin: 40px auto 0;
    text-align: center;
}

.page-khuyen-mai__hero-title {
    color: var(--gold);
    font-size: clamp(2.2rem, 4vw, 3.5rem); /* H1 font size clamp */
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.page-khuyen-mai__hero-description {
    color: var(--text-main);
    font-size: 1.1rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.page-khuyen-mai__hero-cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* For mobile */
}

/* Intro Section */
.page-khuyen-mai__intro-section {
    padding: 60px 20px;
    background-color: var(--deep-navy); /* Dark background from shared */
    color: var(--text-main); /* Light text on dark background */
}

.page-khuyen-mai__dark-section {
    background-color: var(--deep-navy);
    color: var(--text-main);
}

.page-khuyen-mai__image-full-width {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    margin-top: 30px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* Promo Categories */
.page-khuyen-mai__promo-categories {
    padding: 60px 20px;
    background-color: var(--main-blue); 
    color: var(--text-main);
}

.page-khuyen-mai__category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.page-khuyen-mai__card {
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.page-khuyen-mai__card-image {
    width: 100%;
    height: 200px; /* Fixed height for consistency */
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 20px;
}

.page-khuyen-mai__card-title {
    color: var(--gold);
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.page-khuyen-mai__card-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 20px;
    flex-grow: 1; /* Push button to bottom */
}

/* Promo List Detailed */
.page-khuyen-mai__promo-list {
    padding: 60px 20px;
    background-color: var(--deep-navy);
    color: var(--text-main);
}

.page-khuyen-mai__promo-grid-detailed {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-khuyen-mai__promo-card-detailed {
    display: flex;
    flex-direction: column;
    background-color: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    height: 100%;
}

.page-khuyen-mai__card-image-detailed {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
}

.page-khuyen-mai__card-content-detailed {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.page-khuyen-mai__card-title-detailed {
    color: var(--gold);
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.page-khuyen-mai__card-meta {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 15px;
}

.page-khuyen-mai__card-description-detailed {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.5;
    margin-bottom: 25px;
    flex-grow: 1;
}

.page-khuyen-mai__view-all-button-wrapper {
    text-align: center;
    margin-top: 50px;
}

/* FAQ Section */
.page-khuyen-mai__faq-section {
    padding: 60px 20px;
    background-color: var(--main-blue);
    color: var(--text-main);
}

.page-khuyen-mai__faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.page-khuyen-mai__faq-item {
    margin-bottom: 15px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background-color: var(--card-bg);
    overflow: hidden;
}

.page-khuyen-mai__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    cursor: pointer;
    background-color: #10233F; /* Slightly darker than card for contrast */
    color: var(--text-main);
    font-weight: 600;
    font-size: 1.1rem;
    list-style: none; /* For details/summary */
}

.page-khuyen-mai__faq-question::-webkit-details-marker {
    display: none; /* Hide default marker */
}

.page-khuyen-mai__faq-toggle {
    font-size: 1.5rem;
    line-height: 1;
    transition: transform 0.3s ease;
    color: var(--gold);
}

.page-khuyen-mai__faq-item[open] .page-khuyen-mai__faq-toggle {
    transform: rotate(45deg);
}

.page-khuyen-mai__faq-answer {
    padding: 0 25px 20px;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* CTA Section */
.page-khuyen-mai__cta-section {
    padding: 60px 20px;
    text-align: center;
    background-color: var(--deep-navy);
    color: var(--text-main);
}

.page-khuyen-mai__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-top: 30px;
    flex-wrap: wrap;
}

/* Buttons */
.page-khuyen-mai__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.2s ease;
    display: inline-block;
    border: none;
    cursor: pointer;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__btn-primary:hover {
    background: linear-gradient(180deg, #1144A6 0%, #2B73F6 100%);
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-secondary {
    background: #ffffff;
    color: var(--main-blue);
    padding: 12px 30px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s ease, transform 0.2s ease;
    display: inline-block;
    border: 2px solid var(--main-blue);
    cursor: pointer;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
}

.page-khuyen-mai__btn-secondary:hover {
    background: #e0e0e0;
    transform: translateY(-2px);
}

.page-khuyen-mai__btn-outline {
    background: transparent;
    color: var(--gold);
    padding: 8px 20px;
    border: 1px solid var(--gold);
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    transition: background 0.3s ease, color 0.3s ease;
    display: inline-block;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    margin-top: auto; /* Push to bottom for flex column */
}

.page-khuyen-mai__btn-outline:hover {
    background: var(--gold);
    color: var(--deep-navy);
}

/* Responsive */
@media (max-width: 1024px) {
    .page-khuyen-mai__container {
        padding: 20px 30px;
    }
    .page-khuyen-mai__section-title {
        font-size: 2.2rem;
    }
    .page-khuyen-mai__hero-title {
        font-size: clamp(2rem, 5vw, 3rem);
    }
    .page-khuyen-mai__category-grid,
    .page-khuyen-mai__promo-grid-detailed {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-khuyen-mai__hero-section {
        padding-top: 10px !important; /* Specific top padding for mobile, overriding any body padding */
        padding-bottom: 40px;
    }
    .page-khuyen-mai__hero-content {
        margin-top: 30px;
    }
    .page-khuyen-mai__hero-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        margin-bottom: 15px;
    }
    .page-khuyen-mai__hero-description {
        font-size: 1rem;
        margin-bottom: 25px;
    }
    .page-khuyen-mai__hero-cta-buttons {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }

    /* Long text / general content area */
    .page-khuyen-mai__intro-section,
    .page-khuyen-mai__promo-categories,
    .page-khuyen-mai__promo-list,
    .page-khuyen-mai__faq-section,
    .page-khuyen-mai__cta-section {
        padding: 40px 15px;
    }
    .page-khuyen-mai__section-title {
        font-size: 1.8rem;
        margin-bottom: 30px;
    }
    .page-khuyen-mai__text-block {
        font-size: 0.9rem;
    }
    
    /* General Images */
    .page-khuyen-mai img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        box-sizing: border-box !important;
    }
    .page-khuyen-mai__image-full-width,
    .page-khuyen-mai__card-image,
    .page-khuyen-mai__card-image-detailed {
        height: auto !important; /* Ensure images adapt */
        max-height: 200px !important; /* Prevent excessively tall images */
        object-fit: cover !important;
    }

    /* Card Layouts */
    .page-khuyen-mai__category-grid,
    .page-khuyen-mai__promo-grid-detailed {
        grid-template-columns: 1fr; /* Single column for cards */
        gap: 20px;
    }
    .page-khuyen-mai__card-title,
    .page-khuyen-mai__card-title-detailed {
        font-size: 1.2rem;
    }
    .page-khuyen-mai__card-description,
    .page-khuyen-mai__card-description-detailed {
        font-size: 0.85rem;
    }

    /* FAQ */
    .page-khuyen-mai__faq-question {
        font-size: 1rem;
        padding: 15px 20px;
    }
    .page-khuyen-mai__faq-answer {
        padding: 0 20px 15px;
        font-size: 0.9rem;
    }

    /* Buttons and button containers */
    .page-khuyen-mai__cta-button,
    .page-khuyen-mai__btn-primary,
    .page-khuyen-mai__btn-secondary,
    .page-khuyen-mai__btn-outline {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    
    .page-khuyen-mai__hero-cta-buttons,
    .page-khuyen-mai__cta-buttons {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important;
        gap: 10px;
        flex-direction: column;
    }
    /* The following specific selectors are not directly used in this page's HTML, but are part of the '必写清单' for comprehensive coverage. */
    .page-khuyen-mai__home-content { /* Placeholder for long text/gold frame */
        height: auto !important;
        overflow-y: visible !important;
        padding: 20px !important;
    }
    .page-khuyen-mai__home-content h2 { /* Placeholder for long text/gold frame h2 */
        font-size: 1.5rem !important;
    }
    .page-khuyen-mai__slider-track { /* Placeholder for game carousel */
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
    }
    .page-khuyen-mai__slider-wrapper { /* Placeholder for game carousel wrapper */
        max-width: 100% !important;
        overflow: hidden !important;
    }
    .page-khuyen-mai__game-slide { /* Placeholder for individual game slide */
        flex: 0 0 160px !important;
        max-width: 160px !important;
    }
    .page-khuyen-mai__banners-top-wrapper { /* Placeholder for partner grid */
        grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
        gap: 10px !important;
        max-width: 100% !important;
        padding: 0 15px;
    }
    .page-khuyen-mai__banner-item img { /* Placeholder for partner grid image */
        
        
    }
    .page-khuyen-mai__blog-masonry { /* Placeholder for blog cards */
        grid-template-columns: 1fr !important;
        gap: 20px !important;
    }
    .page-khuyen-mai__blog-slider-track { /* Placeholder for blog slider */
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        -webkit-overflow-scrolling: touch;
    }
    .page-khuyen-mai__blog-slide { /* Placeholder for individual blog slide */
        flex: 0 0 calc(100% - 30px) !important;
        max-width: calc(100% - 30px) !important;
        margin-right: 15px;
        margin-left: 15px;
    }
}