:root {
    --primary-color: #11A84E;
    --secondary-color: #22C768;
    --card-bg: #11271B;
    --background: #08160F;
    --text-main: #F2FFF6;
    --text-secondary: #A7D9B8;
    --border-color: #2E7A4E;
    --glow-color: #57E38D;
    --gold-color: #F2C14E;
    --divider-color: #1E3A2A;
    --deep-green-color: #0A4B2C;
    --button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
}

.page-download {
    background-color: var(--background);
    color: var(--text-main);
    font-family: Arial, sans-serif;
    line-height: 1.6;
    padding-top: 10px; /* Small top padding for the first section */
}

.page-download__hero-section {
    position: relative;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0 20px 60px; /* Adjust padding for hero section */
    box-sizing: border-box;
}

.page-download__hero-content-wrapper {
    width: 100%;
    max-width: 1200px;
    display: flex;
    flex-direction: column; /* Ensure image is above text */
    gap: 30px;
    align-items: center;
}

.page-download__hero-image {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 15px;
    object-fit: cover;
}

.page-download__hero-text-block {
    text-align: center;
    max-width: 800px;
    margin-top: 20px; /* Space between image and text */
}

.page-download__main-title {
    font-size: clamp(2.2em, 4vw, 3.2em);
    color: var(--gold-color);
    font-weight: bold;
    margin-bottom: 15px;
    line-height: 1.2;
    text-shadow: 0 0 10px rgba(242, 193, 78, 0.4);
}

.page-download__description {
    font-size: 1.1em;
    color: var(--text-main);
    margin-bottom: 30px;
}

.page-download__cta-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-bottom: 30px;
}

.page-download__btn-primary,
.page-download__btn-secondary {
    padding: 15px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    box-sizing: border-box;
    max-width: 100%;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-download__btn-primary {
    background: var(--button-gradient);
    color: #ffffff;
    border: 2px solid transparent;
    box-shadow: 0 4px 15px rgba(34, 199, 104, 0.4);
}

.page-download__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(34, 199, 104, 0.6);
}

.page-download__btn-secondary {
    background: var(--card-bg);
    color: var(--secondary-color);
    border: 2px solid var(--secondary-color);
    box-shadow: 0 2px 10px rgba(34, 199, 104, 0.2);
}

.page-download__btn-secondary:hover {
    background: var(--secondary-color);
    color: var(--card-bg);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(34, 199, 104, 0.4);
}

.page-download__qr-code-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.page-download__qr-code {
    border: 5px solid var(--gold-color);
    border-radius: 10px;
    padding: 5px;
    width: 200px; /* Explicit width */
    height: 200px; /* Explicit height */
    box-shadow: 0 0 20px var(--gold-color);
}

.page-download__qr-text {
    font-size: 1em;
    color: var(--text-secondary);
    text-align: center;
}

.page-download__section {
    padding: 80px 20px;
    box-sizing: border-box;
}

.page-download__dark-section {
    background-color: var(--deep-green-color);
    color: var(--text-main);
}

.page-download__container {
    max-width: 1200px;
    margin: 0 auto;
}

.page-download__section-title {
    font-size: clamp(1.8em, 3.5vw, 2.8em);
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 40px;
    font-weight: bold;
    text-shadow: 0 0 8px rgba(242, 193, 78, 0.3);
}

.page-download__light-bg-text {
    color: var(--primary-color);
    text-shadow: none;
}

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

.page-download__benefit-item {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.page-download__benefit-image {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: contain;
    margin-bottom: 20px;
    border-radius: 10px;
}

.page-download__benefit-title {
    font-size: 1.4em;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-download__benefit-description {
    font-size: 1em;
    color: var(--text-secondary);
}

.page-download__guide-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 60px;
    margin-top: 40px;
}

.page-download__guide-item {
    background-color: var(--card-bg);
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    border: 1px solid var(--border-color);
}

.page-download__guide-step-title {
    font-size: 1.6em;
    color: var(--gold-color);
    margin-bottom: 20px;
    font-weight: bold;
    text-align: center;
}

.page-download__guide-step-description {
    font-size: 1.1em;
    color: var(--text-main);
    margin-bottom: 25px;
}

.page-download__guide-image {
    width: 100%;
    height: auto;
    border-radius: 10px;
    display: block;
    margin-top: 20px;
    border: 1px solid var(--border-color);
}

.page-download__cta-bottom-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
    margin-top: 60px;
}

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

.page-download__feature-card {
    background-color: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-download__feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

.page-download__feature-image {
    width: 100%;
    height: auto;
    max-height: 250px;
    object-fit: cover;
    margin-bottom: 20px;
    border-radius: 10px;
}

.page-download__feature-title {
    font-size: 1.4em;
    color: var(--gold-color);
    margin-bottom: 15px;
    font-weight: bold;
}

.page-download__feature-description {
    font-size: 1em;
    color: var(--text-secondary);
}

.page-download__text-block {
    font-size: 1.1em;
    color: var(--text-main);
    text-align: center;
    max-width: 900px;
    margin: 0 auto 40px;
}

.page-download__promotions-image {
    width: 100%;
    height: auto;
    display: block;
    margin-top: 40px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    box-shadow: 0 5px 20px rgba(0,0,0,0.2);
}

.page-download__faq-list {
    margin-top: 40px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

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

.page-download__faq-item summary {
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    background-color: var(--deep-green-color);
    color: var(--text-main);
    font-weight: bold;
    font-size: 1.2em;
    transition: background-color 0.3s ease;
}

.page-download__faq-item summary::-webkit-details-marker {
    display: none;
}

.page-download__faq-item summary:hover {
    background-color: var(--primary-color);
}

.page-download__faq-qtext {
    flex-grow: 1;
    color: var(--text-main);
}

.page-download__faq-toggle {
    font-size: 1.5em;
    margin-left: 15px;
    color: var(--gold-color);
    transition: transform 0.3s ease;
}

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

.page-download__faq-answer {
    padding: 20px 25px 25px;
    background-color: var(--card-bg);
    color: var(--text-secondary);
    font-size: 1em;
    border-top: 1px solid var(--divider-color);
}

.page-download__cta-content {
    text-align: center;
    margin-top: 60px;
}

/* Global image responsiveness */
.page-download img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .page-download {
        font-size: 16px;
        line-height: 1.5;
    }

    .page-download__hero-section {
        padding: 0 15px 40px;
    }

    .page-download__hero-image {
        border-radius: 10px;
    }

    .page-download__main-title {
        font-size: clamp(1.8em, 7vw, 2.5em);
        margin-top: 20px;
    }

    .page-download__description {
        font-size: 1em;
    }

    .page-download__cta-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .page-download__btn-primary,
    .page-download__btn-secondary {
        width: 100% !important;
        max-width: 100% !important;
        padding: 12px 20px;
        font-size: 1em;
        white-space: normal !important;
        word-wrap: break-word !important;
    }

    .page-download__section {
        padding: 40px 15px;
    }

    .page-download__container {
        padding-left: 0;
        padding-right: 0;
    }

    .page-download__section-title {
        font-size: clamp(1.5em, 6vw, 2em);
        margin-bottom: 30px;
    }

    .page-download__benefits-grid,
    .page-download__features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .page-download__guide-steps {
        gap: 40px;
    }

    .page-download__guide-item {
        padding: 25px;
    }

    .page-download__guide-step-title {
        font-size: 1.4em;
    }

    .page-download__guide-step-description {
        font-size: 0.95em;
    }

    .page-download__cta-bottom-buttons {
        flex-direction: column;
        gap: 10px;
        margin-top: 40px;
    }

    .page-download__text-block {
        font-size: 1em;
        margin-bottom: 30px;
    }

    .page-download__faq-item summary {
        padding: 15px 20px;
        font-size: 1em;
    }

    .page-download__faq-answer {
        padding: 15px 20px 20px;
        font-size: 0.95em;
    }

    /* Enforce image responsiveness */
    .page-download img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    .page-download__section,
    .page-download__card,
    .page-download__container,
    .page-download__cta-buttons,
    .page-download__button-group,
    .page-download__btn-container {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow: hidden !important;
    }

    .page-download__video-section {
        padding-top: 10px !important; /* body đã xử lý --header-offset */
    }

    .page-download__cta-buttons {
        flex-wrap: wrap !important;
        gap: 10px;
    }
}