.page-huong-dan {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333333; /* Text Main */
    background-color: #F5F7FA; /* Background */
}

.page-huong-dan__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.page-huong-dan__top-section {
    padding-top: 10px; /* Small top padding, relying on body for header offset */
    padding-bottom: 40px;
    text-align: center;
    background-color: #FFFFFF; /* Card BG, as it's a prominent top section */
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.page-huong-dan__main-title {
    font-size: clamp(2.2rem, 4vw, 3.2rem); /* H1 font-size clamp */
    color: #E53935; /* Main color */
    margin-bottom: 15px;
    line-height: 1.2;
    font-weight: bold;
}

.page-huong-dan__lead-text {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 30px auto;
    color: #333333; /* Text Main */
}

.page-huong-dan__top-cta {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap; /* Ensure buttons wrap on smaller screens */
}

.page-huong-dan__btn {
    display: inline-block;
    padding: 12px 25px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1rem;
    transition: all 0.3s ease;
    cursor: pointer;
    max-width: 100%;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-huong-dan__btn--primary {
    background: linear-gradient(180deg, #FF5A4F 0%, #E53935 100%); /* Button gradient */
    color: #ffffff;
    border: none;
    box-shadow: 0 4px 10px rgba(229, 57, 53, 0.3);
}

.page-huong-dan__btn--primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.page-huong-dan__btn--secondary {
    background: #ffffff;
    color: #E53935; /* Main color */
    border: 2px solid #E53935; /* Main color as border */
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
}

.page-huong-dan__btn--secondary:hover {
    background-color: #f0f0f0;
    transform: translateY(-2px);
}

.page-huong-dan__article-wrap {
    max-width: 1150px;
    margin: 40px auto;
    padding: 0 20px;
    box-sizing: border-box;
}

.page-huong-dan__article {
    background-color: #ffffff; /* Card BG */
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

.page-huong-dan__section {
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px dashed #E0E0E0; /* Border */
}

.page-huong-dan__section:last-of-type {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.page-huong-dan__section-title {
    font-size: 1.8rem;
    color: #E53935; /* Main color */
    margin-bottom: 20px;
    border-left: 5px solid #E53935; /* Main color */
    padding-left: 15px;
    line-height: 1.3;
    font-weight: bold;
}

.page-huong-dan__sub-title {
    font-size: 1.4rem;
    color: #FF5A4F; /* Accent color */
    margin-top: 25px;
    margin-bottom: 15px;
    font-weight: bold;
}

.page-huong-dan__figure {
    margin: 25px 0;
    text-align: center;
    background-color: #F5F7FA; /* Background */
    padding: 10px;
    border-radius: 8px;
}

.page-huong-dan__figure img {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 6px;
    margin: 0 auto;
}

.page-huong-dan__figcaption {
    font-size: 0.9rem;
    color: #555555;
    margin-top: 10px;
}

.page-huong-dan p {
    margin-bottom: 15px;
    text-align: justify;
}

.page-huong-dan__highlight {
    color: #E53935; /* Main color */
    font-weight: bold;
}

.page-huong-dan__list {
    list-style-type: disc;
    margin-left: 25px;
    margin-bottom: 15px;
    padding-left: 0;
}

.page-huong-dan__list-item {
    margin-bottom: 8px;
}

.page-huong-dan__cta-box {
    background-color: #FFF3E0; /* Light orange background for CTA */
    border-left: 5px solid #FF5A4F; /* Accent color */
    padding: 20px;
    margin-top: 30px;
    margin-bottom: 30px;
    border-radius: 8px;
    text-align: center;
}

.page-huong-dan__cta-text {
    font-size: 1.1rem;
    margin-bottom: 15px;
    color: #333333; /* Text Main */
    font-weight: bold;
}

.page-huong-dan__faq-question {
    font-size: 1.2rem;
    color: #E53935; /* Main color */
    margin-top: 20px;
    margin-bottom: 10px;
    cursor: pointer;
    position: relative;
    padding-right: 30px;
    font-weight: bold;
}

.page-huong-dan__faq-question::after {
    content: '+';
    position: absolute;
    right: 0;
    top: 0;
    font-size: 1.5rem;
    line-height: 1;
    transition: transform 0.3s ease;
}

.page-huong-dan__faq-answer {
    padding-left: 15px;
    margin-bottom: 15px;
    color: #555555;
    max-height: 1000px; /* Default open for textual FAQ */
    overflow: hidden;
    transition: max-height 0.5s ease-out;
}

.page-huong-dan__promo-section {
    background-color: #E53935; /* Main color */
    color: #ffffff;
    padding: 60px 20px;
    text-align: center;
    margin-top: 40px;
}

.page-huong-dan__promo-title {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    margin-bottom: 15px;
    font-weight: bold;
    color: #ffffff;
}

.page-huong-dan__promo-title a {
    color: #ffffff;
    text-decoration: underline;
}

.page-huong-dan__promo-title a:hover {
    color: #FF5A4F; /* Accent color */
}

.page-huong-dan__promo-description {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 30px auto;
}

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
    .page-huong-dan__main-title {
        font-size: clamp(2rem, 4.5vw, 2.8rem);
    }
    .page-huong-dan__section-title {
        font-size: 1.6rem;
    }
    .page-huong-dan__sub-title {
        font-size: 1.3rem;
    }
    .page-huong-dan__article {
        padding: 25px;
    }
}

@media (max-width: 768px) {
    /* 1. Top Section & CTA */
    .page-huong-dan__top-section {
        padding-top: 10px !important; /* Small top padding for mobile */
        padding-bottom: 30px;
    }
    .page-huong-dan__main-title {
        font-size: clamp(1.8rem, 6vw, 2.5rem);
        margin-bottom: 10px;
    }
    .page-huong-dan__lead-text {
        font-size: 1rem;
        margin-bottom: 20px;
        padding: 0 15px;
    }
    .page-huong-dan__top-cta {
        flex-direction: column;
        align-items: center;
        gap: 10px;
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        overflow: hidden !important;
    }
    .page-huong-dan__btn {
        max-width: 100% !important;
        width: 100% !important;
        padding: 12px 15px !important;
        font-size: 0.95rem !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    /* 2. Single Column Long Article Container */
    .page-huong-dan__article-wrap {
        margin: 20px auto;
        padding: 0 15px;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
    .page-huong-dan__article {
        padding: 20px;
    }
    .page-huong-dan__section {
        margin-bottom: 20px;
        padding-bottom: 15px;
    }
    .page-huong-dan__section-title {
        font-size: 1.5rem;
        padding-left: 10px;
        margin-bottom: 15px;
    }
    .page-huong-dan__sub-title {
        font-size: 1.2rem;
        margin-top: 20px;
        margin-bottom: 10px;
    }
    .page-huong-dan p,
    .page-huong-dan__list-item {
        font-size: 0.95rem;
    }
    .page-huong-dan__list {
        margin-left: 20px;
    }
    .page-huong-dan__cta-box {
        padding: 15px;
        margin-top: 20px;
        margin-bottom: 20px;
    }
    .page-huong-dan__cta-text {
        font-size: 1rem;
        margin-bottom: 10px;
    }

    /* 3. General Images and Figure */
    .page-huong-dan img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
        box-sizing: border-box !important;
    }
    .page-huong-dan__figure {
        margin: 15px 0;
        padding: 8px;
    }
    .page-huong-dan__figcaption {
        font-size: 0.85rem;
    }

    /* 4. Buttons and Button Containers (general check) */
    .page-huong-dan__cta-box .page-huong-dan__btn {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
    }
    .page-huong-dan__promo-section .page-huong-dan__btn {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        white-space: normal !important;
        word-wrap: break-word !important;
        padding: 12px 15px !important;
    }

    /* 5. Registration Tutorial and FAQ Block */
    .page-huong-dan__faq-question {
        font-size: 1.1rem;
        padding-right: 20px;
    }
    .page-huong-dan__faq-question::after {
        font-size: 1.2rem;
    }
    .page-huong-dan__faq-answer {
        padding-left: 10px;
        font-size: 0.9rem;
    }

    /* Promo section */
    .page-huong-dan__promo-section {
        padding: 40px 15px;
        margin-top: 20px;
    }
    .page-huong-dan__promo-title {
        font-size: clamp(1.5rem, 5vw, 2.2rem);
    }
    .page-huong-dan__promo-description {
        font-size: 1rem;
    }
}