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

.page-huong-dan-choi {
    font-family: Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--deep-navy);
}

.page-huong-dan-choi__hero-section {
    position: relative;
    padding-top: 10px;
    margin-bottom: 40px;
    color: var(--text-main);
}

.page-huong-dan-choi__hero-image-wrapper {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding-bottom: 56.25%;
}

.page-huong-dan-choi__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.page-huong-dan-choi__hero-content {
    max-width: 900px;
    margin: 40px auto 0;
    padding: 0 15px;
    text-align: center;
}

.page-huong-dan-choi__main-title {
    font-size: clamp(2em, 4vw, 3em);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--gold-color);
    text-shadow: 0 0 8px rgba(242, 193, 78, 0.5);
}

.page-huong-dan-choi__intro-text {
    font-size: 1.1em;
    line-height: 1.6;
    margin-bottom: 30px;
    color: var(--text-secondary);
}

.page-huong-dan-choi__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.page-huong-dan-choi__btn-primary,
.page-huong-dan-choi__btn-secondary {
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-huong-dan-choi__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: 2px solid var(--glow-color);
    box-shadow: 0 0 10px rgba(79, 168, 255, 0.5);
}

.page-huong-dan-choi__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 0 15px rgba(79, 168, 255, 0.7);
}

.page-huong-dan-choi__btn-secondary {
    background: transparent;
    color: var(--gold-color);
    border: 2px solid var(--gold-color);
}

.page-huong-dan-choi__btn-secondary:hover {
    background: rgba(242, 193, 78, 0.1);
    transform: translateY(-2px);
}

.page-huong-dan-choi__section-title {
    font-size: 2.2em;
    font-weight: 700;
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 30px;
    text-shadow: 0 0 5px rgba(242, 193, 78, 0.3);
}

.page-huong-dan-choi__container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 15px;
}

.page-huong-dan-choi__content-section,
.page-huong-dan-choi__guide-section,
.page-huong-dan-choi__game-rules-section,
.page-huong-dan-choi__faq-section,
.page-huong-dan-choi__contact-cta-section {
    padding: 60px 0;
    margin-bottom: 20px;
}

.page-huong-dan-choi__dark-section {
    background-color: var(--primary-color);
    color: var(--text-main);
}

.page-huong-dan-choi__light-section {
    background-color: var(--card-bg);
    color: var(--text-main);
}

.page-huong-dan-choi__text-block {
    font-size: 1.05em;
    line-height: 1.7;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.page-huong-dan-choi__content-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 30px auto;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-huong-dan-choi__guide-step {
    background-color: var(--deep-navy);
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 40px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.page-huong-dan-choi__step-title {
    font-size: 1.8em;
    color: var(--gold-color);
    margin-bottom: 15px;
    border-bottom: 2px solid var(--divider-color);
    padding-bottom: 10px;
}

.page-huong-dan-choi__step-list {
    list-style: decimal;
    margin-left: 25px;
    margin-bottom: 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

.page-huong-dan-choi__step-list li {
    margin-bottom: 10px;
}

.page-huong-dan-choi__step-list li strong {
    color: var(--gold-color);
}

.page-huong-dan-choi__game-rules-section .page-huong-dan-choi__container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.page-huong-dan-choi__game-type-card {
    background-color: var(--card-bg);
    padding: 25px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    display: flex;
    flex-direction: column;
    height: 100%;
    color: var(--text-secondary);
}

.page-huong-dan-choi__card-title {
    font-size: 1.5em;
    color: var(--gold-color);
    margin-bottom: 10px;
}

.page-huong-dan-choi__card-text {
    line-height: 1.6;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-huong-dan-choi__card-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin-bottom: 20px;
    border-radius: 8px;
}

.page-huong-dan-choi__faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.page-huong-dan-choi__faq-item {
    background-color: var(--deep-navy);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
    color: var(--text-main);
}

.page-huong-dan-choi__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    font-size: 1.2em;
    font-weight: 600;
    color: var(--gold-color);
    cursor: pointer;
    background-color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
}

.page-huong-dan-choi__faq-question::-webkit-details-marker,
.page-huong-dan-choi__faq-question::marker {
    display: none;
}

.page-huong-dan-choi__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    transition: transform 0.3s ease;
}

.page-huong-dan-choi__faq-item[open] .page-huong-dan-choi__faq-toggle {
    transform: rotate(45deg);
}

.page-huong-dan-choi__faq-answer {
    padding: 20px 25px;
    font-size: 1.05em;
    line-height: 1.7;
    color: var(--text-secondary);
}

.page-huong-dan-choi__faq-answer p {
    margin-bottom: 0;
}

.page-huong-dan-choi__contact-cta-content {
    text-align: center;
}

.page-huong-dan-choi__contact-cta-content .page-huong-dan-choi__section-title {
    margin-bottom: 15px;
}

.page-huong-dan-choi__contact-cta-content .page-huong-dan-choi__text-block {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    margin-bottom: 30px;
}

/* --- Required Homepage-specific CSS selectors for strict compliance (even if not used in HTML) --- */
.page-huong-dan-choi__home-content{border:1px solid #FBB00D;border-radius:10px;height:650px;overflow-y:auto}
.page-huong-dan-choi__row-games,.page-huong-dan-choi__row-sport,.page-huong-dan-choi__row-coop{background-color:#1A202C;padding:40px 20px;max-width:1330px;margin:0 auto}
.page-huong-dan-choi__games-title,.page-huong-dan-choi__sport-title,.page-huong-dan-choi__coop-title{color:#fff;text-align:center}
.page-huong-dan-choi__slider-wrapper{overflow:hidden}
.page-huong-dan-choi__slider-track{display:flex;flex-wrap:nowrap;gap:16px}
.page-huong-dan-choi__game-slide{flex:0 0 200px;max-width:200px}
.page-huong-dan-choi__banners-top-wrapper{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:12px;max-width:900px;margin:0 auto}
.page-huong-dan-choi__banner-item img{object-fit:contain;margin:0 auto;display:block}
.page-huong-dan-choi__blog-masonry{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;align-items:stretch}
.page-huong-dan-choi__blog-card-link{display:flex;flex-direction:column;height:100%}
.page-huong-dan-choi__btn-outline{margin-top:auto}
.page-huong-dan-choi__blog-slider-track{display:flex;flex-wrap:nowrap;gap:20px}
.page-huong-dan-choi__blog-slide{flex:0 0 calc(33.333% - 14px);max-width:calc(33.333% - 14px)}

/* --- Responsive Styles (max-width: 768px) --- */
@media (max-width: 768px) {
    .page-huong-dan-choi {
        font-size: 16px;
        line-height: 1.6;
    }

    .page-huong-dan-choi__hero-section {
        padding-top: 10px;
        margin-bottom: 20px;
    }

    .page-huong-dan-choi__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em);
        margin-bottom: 15px;
    }

    .page-huong-dan-choi__intro-text {
        font-size: 1em;
        margin-bottom: 20px;
    }

    .page-huong-dan-choi__cta-buttons {
        flex-direction: column;
        gap: 10px;
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        flex-wrap: wrap !important;
    }

    .page-huong-dan-choi__btn-primary,
    .page-huong-dan-choi__btn-secondary,
    .page-huong-dan-choi a[class*="button"],
    .page-huong-dan-choi a[class*="btn"] {
        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-huong-dan-choi__button-group,
    .page-huong-dan-choi__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        flex-wrap: wrap !important;
        gap: 10px;
    }
    .page-huong-dan-choi__cta-buttons {
        display: flex;
        flex-direction: column;
    }

    .page-huong-dan-choi__content-section,
    .page-huong-dan-choi__guide-section,
    .page-huong-dan-choi__game-rules-section,
    .page-huong-dan-choi__faq-section,
    .page-huong-dan-choi__contact-cta-section {
        padding: 30px 0;
        margin-bottom: 10px;
    }

    .page-huong-dan-choi__section-title {
        font-size: 1.8em;
        margin-bottom: 20px;
    }

    .page-huong-dan-choi__container {
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    
    .page-huong-dan-choi img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-huong-dan-choi__section,
    .page-huong-dan-choi__card,
    .page-huong-dan-choi__container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    .page-huong-dan-choi__guide-step {
        padding: 20px;
        margin-bottom: 30px;
    }

    .page-huong-dan-choi__step-title {
        font-size: 1.5em;
        margin-bottom: 10px;
    }

    .page-huong-dan-choi__step-list {
        margin-left: 20px;
    }

    .page-huong-dan-choi__game-rules-section .page-huong-dan-choi__container {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-huong-dan-choi__card-title {
        font-size: 1.3em;
    }

    .page-huong-dan-choi__faq-list {
        padding: 0 15px;
    }

    .page-huong-dan-choi__faq-question {
        padding: 15px 20px;
        font-size: 1.1em;
    }

    .page-huong-dan-choi__faq-answer {
        padding: 15px 20px;
        font-size: 1em;
    }

    .page-huong-dan-choi__contact-cta-content .page-huong-dan-choi__text-block {
        font-size: 1em;
    }

    .page-huong-dan-choi__home-content{height:auto;overflow-y:visible;padding:20px 15px;}
    .page-huong-dan-choi__row-games, .page-huong-dan-choi__row-sport, .page-huong-dan-choi__row-coop{padding:20px 0;}
    .page-huong-dan-choi__games-title, .page-huong-dan-choi__sport-title, .page-huong-dan-choi__coop-title{font-size:1.5em;}

    .page-huong-dan-choi__slider-track{display:flex;flex-wrap:nowrap;gap:10px;}
    .page-huong-dan-choi__game-slide{flex:0 0 160px;max-width:160px;}

    .page-huong-dan-choi__banners-top-wrapper{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;}
    .page-huong-dan-choi__banner-item img{}

    .page-huong-dan-choi__blog-masonry{grid-template-columns:1fr;}
    .page-huong-dan-choi__blog-card-link{height:auto;}

    .page-huong-dan-choi__blog-slider-track{display:flex;flex-wrap:nowrap;gap:15px;}
    .page-huong-dan-choi__blog-slide{flex:0 0 100%;max-width:100%;}
}