/* style/download.css */
/* body 已 padding-top: var(--header-offset)；页面禁止再写该变量 */
.page-download {
    color: var(--text-main); /* Default text color for the page content, assuming dark background */
    background-color: var(--background); /* Overall page background */
    font-family: Arial, sans-serif;
    line-height: 1.6;
}

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

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

.page-download__hero-image-wrapper {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
    box-sizing: border-box;
    margin-bottom: 30px;
}

.page-download__hero-image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__hero-content {
    max-width: 900px;
    padding: 0 20px;
}

.page-download__main-title {
    font-size: clamp(2em, 4vw, 3.2em); /* Using clamp for responsive H1 font size */
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-main);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

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

.page-download__cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap; /* Ensure buttons wrap on small screens */
}

/* --- Buttons --- */
.page-download__btn-primary,
.page-download__btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 700;
    font-size: 1.1em;
    transition: all 0.3s ease;
    cursor: pointer;
    white-space: normal; /* Allow text to wrap */
    word-wrap: break-word; /* Ensure long words break */
    box-sizing: border-box;
    max-width: 100%;
}

.page-download__btn-primary {
    background: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
    color: var(--text-main); /* #F2FFF6 */
    border: none;
    box-shadow: 0 5px 15px rgba(34, 199, 104, 0.4);
}

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

.page-download__btn-secondary {
    background: transparent;
    color: var(--text-main); /* #F2FFF6 */
    border: 2px solid var(--border); /* #2E7A4E */
}

.page-download__btn-secondary:hover {
    background: rgba(46, 122, 78, 0.2); /* #2E7A4E with opacity */
    transform: translateY(-2px);
}

.page-download__btn-block {
    width: 100%;
    margin-top: 15px;
}

.page-download__btn-large {
    padding: 18px 40px;
    font-size: 1.2em;
}

/* --- Sections --- */
.page-download__section-title {
    font-size: clamp(1.8em, 3.5vw, 2.5em);
    font-weight: 700;
    color: var(--text-main);
    text-align: center;
    margin-bottom: 40px;
    position: relative;
    padding-bottom: 15px;
}

.page-download__section-title::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: 0;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--glow); /* #57E38D */
    border-radius: 2px;
}

.page-download__text-block {
    font-size: 1em;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 30px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-download__dark-section {
    background-color: var(--card-bg); /* #11271B */
    padding: 60px 0;
    color: var(--text-main);
}

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

.page-download__dark-section .page-download__text-block {
    color: var(--text-secondary);
}

/* --- Video Section --- */
.page-download__about-app-section {
    padding-top: 60px;
    padding-bottom: 60px;
    text-align: center;
}

.page-download__video-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px; /* Max width for video */
    margin: 40px auto;
    background-color: #000; /* Black background for video player */
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio (9 / 16 * 100%) */
    height: 0;
}

.page-download__video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
    border-radius: 12px;
    cursor: pointer;
}

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

.page-download__feature-card {
    background-color: var(--card-bg); /* #11271B */
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid var(--divider); /* #1E3A2A */
}

.page-download__feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.page-download__card-image {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto 20px auto;
    border-radius: 8px;
}

.page-download__card-title {
    font-size: 1.4em;
    color: var(--text-main);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-download__card-text {
    font-size: 0.95em;
    color: var(--text-secondary);
}

/* --- Download Methods Section --- */
.page-download__how-to-download-section {
    padding-top: 60px;
    padding-bottom: 60px;
}

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

.page-download__download-card {
    background-color: var(--card-bg); /* #11271B */
    padding: 30px;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--divider);
}

.page-download__qr-code {
    max-width: 200px;
    height: auto;
    display: block;
    margin: 20px auto 30px auto;
    border: 5px solid #fff;
    border-radius: 8px;
}

.page-download__instruction-list {
    list-style: none;
    padding: 0;
    text-align: left;
    margin-bottom: 30px;
    color: var(--text-secondary);
    counter-reset: step-counter;
}

.page-download__instruction-list li {
    margin-bottom: 10px;
    padding-left: 25px;
    position: relative;
    font-size: 0.95em;
}

.page-download__instruction-list li::before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    top: 0;
    background-color: var(--deep-green); /* #0A4B2C */
    color: var(--text-main);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8em;
    font-weight: 700;
}

.page-download__text-link {
    color: var(--glow); /* #57E38D */
    text-decoration: underline;
}

.page-download__text-link:hover {
    color: var(--gold); /* #F2C14E */
}

.page-download__note-text {
    font-style: italic;
    margin-top: 40px;
    color: var(--text-secondary);
}

/* --- App Features Detail Section --- */
.page-download__app-features-section {
    padding-top: 60px;
    padding-bottom: 60px;
    background-color: var(--background);
}

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

.page-download__feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.page-download__feature-image {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
    margin-bottom: 30px;
}

.page-download__feature-title {
    font-size: 1.6em;
    color: var(--text-main);
    margin-bottom: 15px;
    font-weight: 600;
}

.page-download__feature-description {
    font-size: 1em;
    color: var(--text-secondary);
    max-width: 700px;
}

/* --- FAQ Section --- */
.page-download__faq-section {
    padding-top: 60px;
    padding-bottom: 60px;
}

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

.page-download__faq-item {
    background-color: var(--card-bg); /* #11271B */
    border: 1px solid var(--divider); /* #1E3A2A */
    border-radius: 8px;
    margin-bottom: 15px;
    overflow: hidden;
}

.page-download__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: 600;
    color: var(--text-main);
    background-color: var(--deep-green); /* #0A4B2C */
    user-select: none;
    list-style: none; /* For details summary */
}

.page-download__faq-question::-webkit-details-marker {
    display: none; /* Hide default marker for Chrome/Safari */
}

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

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

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

.page-download__faq-answer {
    padding: 15px 25px 20px 25px;
    background-color: var(--card-bg);
    color: var(--text-secondary);
    font-size: 0.95em;
    border-top: 1px solid var(--divider);
}

/* --- Bottom CTA Section --- */
.page-download__cta-bottom-section {
    padding: 80px 0;
    text-align: center;
    background-color: var(--background);
}

/* --- Global Image/Video/Button Responsiveness for Mobile --- */
@media (max-width: 768px) {
    .page-download {
        font-size: 16px;
        line-height: 1.6;
    }

    .page-download__container {
        padding-left: 15px !important;
        padding-right: 15px !important;
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
    }

    /* Images */
    .page-download img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
        display: block !important;
    }

    .page-download__hero-image-wrapper,
    .page-download__feature-card,
    .page-download__download-card,
    .page-download__feature-item {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 0;
        padding-right: 0;
    }

    /* Videos */
    .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__about-app-section {
        padding-top: 10px !important; /* body already handles --header-offset, this is decorative */
    }

    /* Buttons */
    .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-left: 15px;
        padding-right: 15px;
    }

    .page-download__section-title {
        margin-bottom: 20px;
    }

    .page-download__section-title::after {
        width: 60px;
    }

    .page-download__features-detail-grid {
        gap: 40px;
    }

    .page-download__feature-item:nth-child(even) {
        flex-direction: column; /* Reset to default column for mobile */
    }

    .page-download__feature-image {
        margin-bottom: 20px;
    }
}

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

/* Ensure contrast for text on various backgrounds */
.page-download__card {
    color: var(--text-main); /* Light text for dark card background */
}

/* Assuming body is dark from shared.css, page content will have light text */
.page-download {
    color: var(--text-main);
}
.page-download p,
.page-download li {
    color: var(--text-secondary);
}

.page-download__faq-answer p {
    color: var(--text-secondary);
}

.page-download__note-text strong {
    color: var(--gold);
}