:root {
    --page-download-primary: #11A84E;
    --page-download-secondary: #22C768;
    --page-download-card-bg: #11271B;
    --page-download-background: #08160F;
    --page-download-text-main: #F2FFF6;
    --page-download-text-secondary: #A7D9B8;
    --page-download-border: #2E7A4E;
    --page-download-glow: #57E38D;
    --page-download-gold: #F2C14E;
    --page-download-divider: #1E3A2A;
    --page-download-deep-green: #0A4B2C;
    --page-download-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    --page-download-dark-text: #333333; /* For light backgrounds */
    --page-download-light-text: #ffffff; /* For dark backgrounds */
}

.page-download {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--page-download-dark-text); /* Default text for light body background */
    background-color: #ffffff; /* Assuming default body background is white */
}

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

/* Hero Section */
.page-download__hero-section {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 10px 0 60px 0; /* body handles top padding, this is extra visual space */
    background-color: var(--page-download-background);
    color: var(--page-download-text-main);
    overflow: hidden; /* Ensure image doesn't overflow */
}

.page-download__hero-image-wrapper {
    width: 100%;
    max-height: 70vh; /* Limit height for hero image */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px; /* Space between image and content */
}

.page-download__hero-image {
    width: 100%;
    height: auto;
    object-fit: cover; /* Ensure image covers the area */
    min-height: 200px; /* Minimum size */
    max-height: 675px; /* Maximum height to prevent it from being too large */
}

.page-download__hero-content {
    position: relative; /* Ensure content is above any potential background layers */
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.page-download__main-title {
    font-size: clamp(2.2em, 4vw, 3.5em); /* Responsive font size */
    font-weight: bold;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--page-download-text-main);
}

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

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

/* General Button Styles */
.page-download__btn-primary,
.page-download__btn-secondary {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-align: center;
    box-sizing: border-box;
    white-space: normal; /* Allow text to wrap */
    word-wrap: break-word; /* Break long words */
    max-width: 100%; /* Ensure responsiveness */
}

.page-download__btn-primary {
    background: var(--page-download-button-gradient);
    color: var(--page-download-light-text);
    border: none;
}

.page-download__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

.page-download__btn-secondary {
    background: transparent;
    color: var(--page-download-primary);
    border: 2px solid var(--page-download-primary);
}

.page-download__btn-secondary:hover {
    background: var(--page-download-primary);
    color: var(--page-download-light-text);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
}

/* Section Titles */
.page-download__section-title {
    font-size: 2.5em;
    font-weight: bold;
    text-align: center;
    margin-bottom: 40px;
    color: var(--page-download-text-main); /* Default for dark sections */
}

/* Why Download Section (Dark Background) */
.page-download__why-download-section {
    background-color: var(--page-download-background);
    padding: 80px 0;
    color: var(--page-download-text-main);
}

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

.page-download__feature-card {
    background-color: var(--page-download-card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-align: center;
    color: var(--page-download-text-main);
}

.page-download__card-title {
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 15px;
    color: var(--page-download-gold);
}

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

/* Guide Section (Light Background) */
.page-download__guide-section {
    background-color: #ffffff; /* Light background */
    padding: 80px 0;
    color: var(--page-download-dark-text);
}

.page-download__guide-section .page-download__section-title {
    color: var(--page-download-dark-text); /* Override for light background */
}

.page-download__download-steps {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 40px;
    margin-bottom: 60px;
}

.page-download__download-platform {
    flex: 1;
    min-width: 300px;
    max-width: 45%;
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    text-align: center;
    box-sizing: border-box;
}

.page-download__platform-title {
    font-size: 1.8em;
    font-weight: bold;
    margin-bottom: 25px;
    color: var(--page-download-primary);
}

.page-download__qr-code-wrapper {
    margin-bottom: 25px;
    display: flex;
    justify-content: center;
}

.page-download__qr-code {
    width: 100%;
    max-width: 250px;
    height: auto;
    border: 5px solid var(--page-download-primary);
    border-radius: 5px;
    min-width: 200px; /* Minimum size */
    min-height: 200px; /* Minimum size */
}

.page-download__steps-list {
    list-style: decimal;
    text-align: left;
    padding-left: 20px;
    margin-top: 25px;
    color: var(--page-download-dark-text);
}

.page-download__steps-list li {
    margin-bottom: 10px;
    font-size: 1.05em;
}

.page-download__system-requirements {
    background-color: #f0f0f0;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    text-align: left;
}

.page-download__requirements-list {
    list-style: disc;
    padding-left: 20px;
    margin-top: 15px;
    color: var(--page-download-dark-text);
}

.page-download__requirements-list li {
    margin-bottom: 8px;
}

/* App Features Section (Dark Background) */
.page-download__app-features-section {
    background-color: var(--page-download-background);
    padding: 80px 0;
    color: var(--page-download-text-main);
}

.page-download__app-features-section .page-download__section-title {
    color: var(--page-download-text-main);
}

.page-download__features-display {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 40px;
}

.page-download__feature-content {
    flex: 1;
    min-width: 300px;
}

.page-download__feature-heading {
    font-size: 1.8em;
    font-weight: bold;
    margin-top: 30px;
    margin-bottom: 15px;
    color: var(--page-download-gold);
}

.page-download__feature-text {
    font-size: 1.05em;
    margin-bottom: 25px;
    color: var(--page-download-text-secondary);
}

.page-download__feature-image-wrapper {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.page-download__feature-image {
    width: 100%;
    height: auto;
    max-width: 600px;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    min-width: 200px; /* Minimum size */
    min-height: 200px; /* Minimum size */
}

/* FAQ Section (Light Background) */
.page-download__faq-section {
    background-color: #ffffff;
    padding: 80px 0;
    color: var(--page-download-dark-text);
}

.page-download__faq-section .page-download__section-title {
    color: var(--page-download-dark-text);
}

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

.page-download__faq-item {
    background-color: #f9f9f9;
    border: 1px solid var(--page-download-border);
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.page-download__faq-item summary {
    list-style: none; /* Hide default marker */
    cursor: pointer;
    padding: 20px 25px;
    font-size: 1.2em;
    font-weight: bold;
    color: var(--page-download-primary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.page-download__faq-item summary::-webkit-details-marker {
    display: none; /* Hide default marker for webkit browsers */
}

.page-download__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.page-download__faq-qtext {
    flex-grow: 1;
    text-align: left;
}

.page-download__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    transition: transform 0.3s ease;
}

.page-download__faq-item[open] .page-download__faq-toggle {
    transform: rotate(45deg); /* Rotate for 'minus' effect */
}

.page-download__faq-answer {
    padding: 0 25px 20px 25px;
    font-size: 1.05em;
    color: var(--page-download-dark-text);
    text-align: left;
}

/* Final CTA Section (Dark Background) */
.page-download__cta-final-section {
    background-color: var(--page-download-deep-green);
    padding: 80px 0;
    text-align: center;
    color: var(--page-download-text-main);
}

.page-download__cta-final-section .page-download__section-title {
    color: var(--page-download-text-main);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .page-download__hero-image {
        max-height: 500px;
    }
}

@media (max-width: 768px) {
    .page-download__container {
        padding: 0 15px; /* Add padding for mobile content */
    }

    .page-download__hero-section {
        padding: 10px 0 40px 0;
    }

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

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

    .page-download__cta-buttons {
        flex-direction: column;
        gap: 15px;
    }

    .page-download__btn-primary,
    .page-download__btn-secondary,
    .page-download a[class*="button"],
    .page-download 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: 12px 20px; /* Adjust padding for mobile buttons */
    }

    .page-download__section-title {
        font-size: 2em;
        margin-bottom: 30px;
    }

    .page-download__why-download-section,
    .page-download__guide-section,
    .page-download__app-features-section,
    .page-download__faq-section,
    .page-download__cta-final-section {
        padding: 60px 0;
    }

    .page-download__download-steps {
        flex-direction: column;
        gap: 30px;
    }

    .page-download__download-platform {
        max-width: 100%;
    }

    .page-download__features-display {
        flex-direction: column;
    }

    .page-download__feature-image-wrapper {
        order: -1; /* Move image above text on mobile */
    }

    .page-download__faq-item summary {
        font-size: 1.1em;
        padding: 15px 20px;
    }
    
    /* Mobile image responsiveness */
    .page-download img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    /* Mobile container responsiveness */
    .page-download__section,
    .page-download__card,
    .page-download__container,
    .page-download__hero-section,
    .page-download__why-download-section,
    .page-download__guide-section,
    .page-download__app-features-section,
    .page-download__faq-section,
    .page-download__cta-final-section,
    .page-download__download-platform,
    .page-download__feature-card {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        /* Padding for sections on mobile to prevent content touching edges */
        padding-left: 15px; 
        padding-right: 15px;
    }

    .page-download__hero-section {
        padding-left: 0 !important; /* Hero section content has its own padding */
        padding-right: 0 !important;
    }
    .page-download__hero-content {
        padding-left: 15px !important;
        padding-right: 15px !important;
    }
    .page-download__hero-image-wrapper {
        padding-left: 0 !important;
        padding-right: 0 !important;
    }

    .page-download__faq-section {
        padding-top: 10px !important; /* body already has padding, this is extra visual space */
    }

    .page-download__cta-buttons {
        flex-wrap: wrap !important;
        gap: 10px;
        flex-direction: column; /* Ensure buttons stack vertically */
    }
}

/* Image specific CSS to ensure minimum size and no filter */
.page-download img {
    min-width: 200px;
    min-height: 200px;
    filter: none !important;
}

/* Ensure content area images are not too small */
.page-download__content-area img,
.page-download__feature-image,
.page-download__qr-code {
  width: 100%; /* Ensure images take full width of their container */
  height: auto;
  max-width: 100%; /* Ensure responsiveness */
  min-width: 200px; /* Enforce minimum size */
  min-height: 200px; /* Enforce minimum size */
  object-fit: contain; /* Or cover, depending on desired effect */
}

/* Video specific CSS - not used in this page, but as a general rule */
.page-download video,
.page-download__video {
    max-width: 100%;
    width: 100%;
    height: auto;
    display: block;
}

.page-download__video-section,
.page-download__video-container,
.page-download__video-wrapper {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

@media (max-width: 768px) {
    .page-download video,
    .page-download__video {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    
    .page-download__video-section,
    .page-download__video-container,
    .page-download__video-wrapper {
        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 已承担 --header-offset，此处禁止 var(--header-offset) */
    }
    
    .page-download__video-wrapper {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }
}