:root {
    --page-background: #08160F;
    --page-card-bg: #11271B;
    --page-text-main: #F2FFF6;
    --page-text-secondary: #A7D9B8;
    --page-border: #2E7A4E;
    --page-glow: #57E38D;
    --page-gold: #F2C14E;
    --page-divider: #1E3A2A;
    --page-deep-green: #0A4B2C;
}

.page-download {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--page-text-main); /* Default to light text on dark background */
    background-color: var(--page-background); /* Dark background */
}

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

.page-download__hero-section {
    position: relative;
    overflow: hidden;
    padding-bottom: 50px; 
    text-align: center;
    background-color: var(--page-background);
    padding-top: 10px; /* Small top padding as per requirement */
}

.page-download__hero-image {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.page-download__hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.3; /* Subtle background */
}

.page-download__hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 80px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px; /* Ensure content area is visible */
    box-sizing: border-box;
}

.page-download__main-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem); /* Using clamp for H1 */
    font-weight: 700;
    color: var(--page-text-main);
    margin-bottom: 20px;
    line-height: 1.2;
}

.page-download__description {
    font-size: 1.2rem;
    color: var(--page-text-secondary);
    margin-bottom: 40px;
    max-width: 800px;
}

.page-download__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    width: 100%; /* Ensure container takes full width */
    max-width: 600px; /* Limit button group width */
    box-sizing: border-box;
    overflow: hidden; /* Prevent overflow */
}

.page-download__btn-primary,
.page-download__btn-secondary,
.page-download__btn-small,
.page-download__btn-large,
.page-download a[class*="button"],
.page-download a[class*="btn"] {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    text-align: center;
    cursor: pointer;
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word; /* Allow text wrapping */
    box-sizing: border-box; /* Include padding/border in width */
    max-width: 100%; /* Ensure button doesn't exceed container */
}

.page-download__btn-primary {
    background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    color: var(--page-text-main); /* White-ish text on green button */
    border: none;
}

.page-download__btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 100, 0.3);
}

.page-download__btn-secondary {
    background: var(--page-card-bg); /* Darker green background */
    color: var(--page-text-main); /* White-ish text */
    border: 2px solid var(--page-border);
}

.page-download__btn-secondary:hover {
    transform: translateY(-2px);
    background: var(--page-border);
    color: var(--page-text-main);
}

.page-download__btn-small {
    padding: 10px 20px;
    font-size: 1rem;
}

.page-download__btn-large {
    padding: 18px 35px;
    font-size: 1.2rem;
}

.page-download__section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    color: var(--page-gold);
    text-align: center;
    margin-bottom: 20px;
    font-weight: 700;
}

.page-download__section-description {
    font-size: 1.1rem;
    color: var(--page-text-secondary);
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px auto;
}

.page-download__dark-section {
    background-color: var(--page-card-bg);
    padding: 60px 0;
}

.page-download__light-bg {
    background-color: var(--page-background); /* Use the main background for contrast */
    padding: 60px 0;
}

/* Why Choose Section */
.page-download__why-choose-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.page-download__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-download__feature-item {
    background: var(--page-background); /* Darker green for feature items */
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
    border: 1px solid var(--page-divider);
}

.page-download__feature-item:hover {
    transform: translateY(-5px);
}

.page-download__feature-item img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 20px auto;
    border-radius: 5px;
    min-width: 200px;
    min-height: 200px;
}

.page-download__feature-title {
    font-size: 1.5rem;
    color: var(--page-text-main);
    margin-bottom: 15px;
}

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

/* Download Guide Section */
.page-download__download-guide {
    padding-top: 80px;
    padding-bottom: 80px;
}

.page-download__guide-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.page-download__guide-step {
    background: var(--page-card-bg); /* Darker green for guide steps */
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--page-divider);
}

.page-download__step-icon {
    width: 60px;
    height: 60px;
    line-height: 60px;
    background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    color: var(--page-text-main);
    border-radius: 50%;
    font-size: 2rem;
    font-weight: bold;
    margin: 0 auto 20px auto;
}

.page-download__step-title {
    font-size: 1.6rem;
    color: var(--page-gold);
    margin-bottom: 15px;
}

.page-download__step-text {
    font-size: 1rem;
    color: var(--page-text-secondary);
    margin-bottom: 20px;
}

.page-download__guide-step img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto 0 auto;
    border-radius: 8px;
    border: 1px solid var(--page-divider);
    min-width: 200px;
    min-height: 200px;
}

/* App Features Section */
.page-download__app-features-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.page-download__features-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-download__feature-card {
    background: var(--page-background); /* Darker green for feature cards */
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--page-divider);
}

.page-download__card-title {
    font-size: 1.4rem;
    color: var(--page-gold);
    margin-bottom: 10px;
}

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

/* Device Support Section */
.page-download__device-support-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.page-download__device-icons {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 40px;
    flex-wrap: wrap;
}

.page-download__device-item {
    text-align: center;
    color: var(--page-text-main);
}

.page-download__device-item img {
    
    
    object-fit: contain;
    margin-bottom: 15px;
    min-width: 200px; /* Enforce minimum size for icons too */
    min-height: 200px;
}

.page-download__device-item p {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--page-text-secondary);
}

.page-download__device-note {
    text-align: center;
    margin-top: 30px;
    font-size: 1rem;
    color: var(--page-text-secondary);
}

/* Security Benefits Section */
.page-download__security-benefits-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.page-download__benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.page-download__benefit-item {
    background: var(--page-background); /* Darker green for benefit items */
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
    border: 1px solid var(--page-divider);
}

.page-download__benefit-item:hover {
    transform: translateY(-5px);
}

.page-download__benefit-item img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 20px auto;
    border-radius: 5px;
    min-width: 200px;
    min-height: 200px;
}

.page-download__benefit-title {
    font-size: 1.5rem;
    color: var(--page-text-main);
    margin-bottom: 15px;
}

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

/* FAQ Section */
.page-download__faq-section {
    padding-top: 80px;
    padding-bottom: 80px;
}

.page-download__faq-list {
    max-width: 900px;
    margin: 40px auto 0 auto;
}

details.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--page-divider);
  overflow: hidden;
  background: var(--page-card-bg); /* Darker background for FAQ items */
  color: var(--page-text-secondary); /* Light text on dark background */
}
details.page-download__faq-item summary.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-download__faq-item summary.page-download__faq-question::-webkit-details-marker {
  display: none;
}
details.page-download__faq-item summary.page-download__faq-question:hover {
  background: var(--page-divider); /* Slightly lighter on hover */
}
.page-download__faq-qtext {
  flex: 1;
  font-size: 1.1rem;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--page-text-main); /* Main text color for question */
}
.page-download__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--page-gold); /* Gold color for toggle icon */
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-download__faq-item .page-download__faq-answer {
  padding: 0 20px 20px;
  background: var(--page-background); /* Main background for answer area */
  border-radius: 0 0 5px 5px;
  color: var(--page-text-secondary); /* Secondary text color for answer */
}

/* Final CTA Section */
.page-download__final-cta-section {
    padding: 80px 0;
    text-align: center;
}

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

/* --- Responsive Styles --- */
@media (max-width: 1024px) {
    .page-download__hero-content {
        padding: 60px 20px;
    }
    .page-download__main-title {
        font-size: clamp(2rem, 4.5vw, 3rem);
    }
    .page-download__description {
        font-size: 1.1rem;
    }
    .page-download__btn-primary,
    .page-download__btn-secondary,
    .page-download__btn-large {
        padding: 12px 25px;
        font-size: 1rem;
    }
    .page-download__section-title {
        font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    }
    .page-download__section-description {
        font-size: 1rem;
    }
    .page-download__features-grid,
    .page-download__guide-steps,
    .page-download__features-list,
    .page-download__benefits-grid {
        gap: 20px;
    }
    .page-download__feature-item,
    .page-download__guide-step,
    .page-download__feature-card,
    .page-download__benefit-item {
        padding: 25px;
    }
    .page-download__feature-title,
    .page-download__step-title,
    .page-download__card-title,
    .page-download__benefit-title {
        font-size: 1.3rem;
    }
    .page-download__faq-qtext {
        font-size: 1rem;
    }
}


@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-download__hero-section {
        padding-bottom: 30px;
        padding-top: 10px; /* Small top padding */
    }
    .page-download__hero-image img {
        object-fit: contain !important; /* Mobile: contain, not cover */
        aspect-ratio: unset !important; /* Allow natural aspect ratio */
        height: auto !important; /* Ensure height adjusts */
        width: 100% !important;
    }
    .page-download__hero-content {
        padding: 40px 15px;
        min-height: unset;
    }
    .page-download__main-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem); /* Smaller H1 on mobile */
        margin-bottom: 15px;
    }
    .page-download__description {
        font-size: 0.95rem;
        margin-bottom: 30px;
    }

    /* 按钮与按钮容器 */
    .page-download__cta-buttons {
        flex-direction: column; /* Stack buttons vertically */
        gap: 15px;
        max-width: 100% !important; /* Ensure container takes full width */
        width: 100% !important;
        padding-left: 15px;
        padding-right: 15px;
        box-sizing: border-box !important;
        overflow: hidden !important;
    }
    .page-download__btn-primary,
    .page-download__btn-secondary,
    .page-download__btn-small,
    .page-download__btn-large,
    .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-left: 15px;
        padding-right: 15px;
        font-size: 1rem !important;
    }

    /* 通用图片与容器 */
    .page-download img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }
    .page-download__container,
    .page-download__why-choose-section,
    .page-download__download-guide,
    .page-download__app-features-section,
    .page-download__device-support-section,
    .page-download__security-benefits-section,
    .page-download__faq-section,
    .page-download__final-cta-section {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
        overflow-x: hidden !important; /* Prevent horizontal scroll */
    }

    /* 产品展示图区域 (features-grid, guide-steps, features-list, benefits-grid) */
    .page-download__features-grid,
    .page-download__guide-steps,
    .page-download__features-list,
    .page-download__benefits-grid {
        grid-template-columns: 1fr; /* Single column layout */
        gap: 25px;
    }
    .page-download__feature-item,
    .page-download__guide-step,
    .page-download__feature-card,
    .page-download__benefit-item {
        padding: 20px;
    }
    .page-download__feature-item img,
    .page-download__guide-step img,
    .page-download__benefit-item img {
        min-width: unset;
        min-height: unset;
    }
    .page-download__device-icons {
        flex-direction: column; /* Stack device icons vertically */
        gap: 20px;
    }
    .page-download__device-item img {
        
        
        min-width: unset;
        min-height: unset;
    }

    /* 装饰主标题 + 长文 SEO 区 */
    .page-download__section-title {
        font-size: clamp(1.5rem, 6vw, 2rem);
        margin-bottom: 15px;
    }
    .page-download__section-description {
        font-size: 0.9rem;
        margin-bottom: 25px;
    }
    .page-download__faq-question { padding: 15px; }
    .page-download__faq-qtext { font-size: 15px; }
    .page-download__faq-toggle {
        font-size: 20px;
        width: 24px;
        height: 24px;
    }
    details.page-download__faq-item .page-download__faq-answer {
        padding: 0 15px 15px;
    }
}