:root {
    --color-primary: #C91F17;
    --color-secondary: #E53935;
    --btn-gradient: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%);
    --card-bg: #D32F2F;
    --background-main: #B71C1C;
    --text-main: #FFF5E1;
    --border-gold: #F2B544;
    --glow-gold: #FFCC66;
    --gold-color: #F4D34D;
    --deep-red: #7A0E0E;
}

.page-download {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-main, #FFF5E1); /* Default text color for dark body background */
    background-color: var(--color-background, #0d0d0d); /* Assuming shared.css defines a dark background */
}

.page-download__section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.page-download__hero-section {
    position: relative;
    padding-top: 10px; /* Small top padding, assuming body handles --header-offset */
    padding-bottom: 60px;
    background: var(--background-main, #B71C1C);
    color: var(--text-main, #FFF5E1);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.page-download__hero-content {
    position: relative;
    z-index: 2;
    padding: 20px;
    max-width: 900px;
    margin: 0 auto 30px;
    text-align: center;
}

.page-download__hero-image {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 1200px;
    margin-top: 30px; /* Space between content and image */
}

.page-download__hero-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 10px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.5);
    object-fit: cover;
}

.page-download__main-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-main, #FFF5E1);
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.4);
}

.page-download__hero-description {
    font-size: 1.15rem;
    margin-bottom: 40px;
    color: var(--text-main, #FFF5E1);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

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

.page-download__btn-primary,
.page-download__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 700;
    text-decoration: none;
    transition: all 0.3s ease;
    white-space: nowrap;
    cursor: pointer;
    box-sizing: border-box;
    max-width: 100%;
}

.page-download__btn-primary {
    background: var(--btn-gradient);
    color: #333333; /* Dark text on gold gradient for contrast */
    border: 2px solid var(--border-gold, #F2B544);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-download__btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    filter: brightness(1.1);
}

.page-download__btn-secondary {
    background: var(--deep-red, #7A0E0E);
    color: var(--text-main, #FFF5E1);
    border: 2px solid var(--border-gold, #F2B544);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.page-download__btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    filter: brightness(1.2);
}

.page-download__section-title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--gold-color, #F4D34D);
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.3);
}

.page-download__section-description {
    font-size: 1.05rem;
    max-width: 900px;
    margin: 0 auto 40px;
    color: var(--text-main, #FFF5E1);
}

.page-download__download-methods {
    background: var(--background-main, #B71C1C);
}

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

.page-download__method-card {
    background: var(--card-bg, #D32F2F);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    color: var(--text-main, #FFF5E1);
    border: 1px solid var(--border-gold, #F2B544);
}

.page-download__card-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--gold-color, #F4D34D);
}

.page-download__card-image {
    width: 100%;
    max-width: 200px;
    height: auto;
    margin-bottom: 20px;
    border-radius: 10px;
    border: 2px solid var(--border-gold, #F2B544);
    object-fit: contain;
}

.page-download__qr-code {
    border-radius: 0;
    max-width: 250px;
}

.page-download__card-text {
    font-size: 1rem;
    margin-bottom: 25px;
    flex-grow: 1;
}

.page-download__installation-guide {
    background: var(--deep-red, #7A0E0E);
}

.page-download__guide-steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
    margin-top: 40px;
    text-align: left;
}

.page-download__guide-item {
    background: var(--card-bg, #D32F2F);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    color: var(--text-main, #FFF5E1);
    border: 1px solid var(--border-gold, #F2B544);
}

.page-download__guide-title {
    font-size: 1.6rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--gold-color, #F4D34D);
}

.page-download__guide-item p {
    font-size: 1rem;
    margin-bottom: 15px;
}

.page-download__guide-image {
    width: 100%;
    height: auto;
    margin-top: 20px;
    border-radius: 10px;
    border: 2px solid var(--border-gold, #F2B544);
    object-fit: cover;
}

.page-download__why-download {
    background: var(--background-main, #B71C1C);
}

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

.page-download__benefit-card {
    background: #ffffff; /* Light background for contrast */
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    text-align: left;
    color: #333333; /* Dark text on light background */
    border: 1px solid #e0e0e0;
}

.page-download__benefit-card .page-download__card-title {
    color: var(--color-primary, #C91F17);
    margin-bottom: 15px;
}

.page-download__benefit-card .page-download__card-text {
    color: #555555;
}

.page-download__faq-section {
    background: var(--deep-red, #7A0E0E);
}

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

details.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--border-gold, #F2B544);
  overflow: hidden;
  background: var(--card-bg, #D32F2F);
  color: var(--text-main, #FFF5E1);
}
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(--deep-red, #7A0E0E);
}
.page-download__faq-qtext {
  flex: 1;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--gold-color, #F4D34D);
}
.page-download__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--text-main, #FFF5E1);
  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(--deep-red, #7A0E0E);
  border-radius: 0 0 5px 5px;
  color: var(--text-main, #FFF5E1);
}

.page-download__cta-final {
    background: var(--background-main, #B71C1C);
    padding-bottom: 80px;
}

/* --- Mobile Responsiveness --- */
@media (max-width: 1024px) {
    .page-download__section {
        padding: 40px 15px;
    }

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

    .page-download__hero-description {
        font-size: 1rem;
        margin-bottom: 30px;
    }

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

    .page-download__btn-primary,
    .page-download__btn-secondary {
        width: 100%;
        max-width: 300px; /* Constrain width for better look on tablets */
        margin: 0 auto;
    }

    .page-download__methods-grid,
    .page-download__benefits-grid {
        grid-template-columns: 1fr;
    }

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

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

@media (max-width: 768px) {
    .page-download__section {
        padding: 30px 15px;
    }

    /* HERO 主图区域 */
    .page-download__hero-section {
        padding-top: 10px; /* Small top padding */
        padding-bottom: 30px;
    }

    .page-download__hero-image img {
        object-fit: contain !important; /* Ensure image is not cropped */
        aspect-ratio: unset !important; /* Remove aspect ratio constraint */
        width: 100% !important;
        height: auto !important;
        max-width: 100% !important;
    }

    .page-download__main-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
        margin-bottom: 15px;
    }

    .page-download__hero-description {
        font-size: 0.95rem;
        margin-bottom: 25px;
    }

    /* 通用图片与容器 */
    .page-download img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block;
        box-sizing: border-box !important;
    }

    .page-download__section,
    .page-download__method-card,
    .page-download__guide-item,
    .page-download__benefit-card,
    details.page-download__faq-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px;
        padding-right: 15px;
    }

    /* 按钮与按钮容器 */
    .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;
        flex-direction: column !important; /* Force vertical stacking */
        gap: 15px !important;
    }
    .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; /* Allow text wrapping */
        word-wrap: break-word !important;
        padding: 12px 20px !important;
        font-size: 1rem !important;
    }

    .page-download__section-title {
        font-size: clamp(1.5rem, 6vw, 2.2rem);
        margin-bottom: 15px;
    }

    .page-download__section-description {
        font-size: 0.9rem;
        margin-bottom: 30px;
    }

    .page-download__card-title {
        font-size: 1.3rem;
    }

    .page-download__card-text {
        font-size: 0.9rem;
    }

    .page-download__guide-title {
        font-size: 1.2rem;
    }

    .page-download__guide-item p {
        font-size: 0.9rem;
    }

    details.page-download__faq-item summary.page-download__faq-question { padding: 15px; }
    .page-download__faq-qtext { font-size: 15px; }
    details.page-download__faq-item .page-download__faq-answer { padding: 0 15px 15px; }

    /* 装饰主标题 + 长文 SEO 区 - No specific long text section, general sections apply */
    /* For general content sections, ensure text and images are constrained */
    .page-download p, .page-download li {
        font-size: 15px;
        line-height: 1.6;
    }
}