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

.page-download {
    font-family: Arial, sans-serif;
    color: var(--text-main);
    background-color: var(--background-color);
    line-height: 1.6;
    padding-bottom: 20px; /* Add some padding to the bottom of the page content */
}

.page-download__hero-section {
    position: relative;
    padding-top: 10px; /* Small top padding, relying on body for header offset */
    padding-bottom: 0;
    padding-left: 0;
    padding-right: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.page-download__hero-image-wrapper {
    width: 100%;
    max-width: 100%;
    overflow: hidden;
}

.page-download__hero-image {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    max-height: 675px;
}

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

.page-download__main-title {
    font-size: 2.8em;
    font-weight: bold;
    color: var(--gold-color);
    margin-bottom: 15px;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

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

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

.page-download__btn {
    display: inline-block;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: all 0.3s ease;
    white-space: normal; /* Allow text wrapping */
    word-wrap: break-word; /* Allow word breaking */
    box-sizing: border-box;
    max-width: 100%;
}

.page-download__btn-primary {
    background: var(--button-gradient);
    color: var(--text-main);
    border: none;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.page-download__btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

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

.page-download__btn-secondary:hover {
    background: rgba(242, 193, 78, 0.1);
    transform: translateY(-2px);
}

.page-download__section-title {
    font-size: 2.2em;
    color: var(--gold-color);
    text-align: center;
    margin-bottom: 40px;
    padding-top: 40px;
    font-weight: bold;
}

.page-download__section-intro {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.05em;
    max-width: 800px;
    margin: 0 auto 50px auto;
}

.page-download__dark-section {
    background-color: var(--card-bg);
    padding: 60px 20px;
    border-top: 1px solid var(--divider-color);
    border-bottom: 1px solid var(--divider-color);
}

.page-download__advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-download__advantage-card {
    background-color: var(--background-color);
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-download__advantage-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: 8px;
    margin-bottom: 20px;
    display: block;
}

.page-download__advantage-title {
    font-size: 1.6em;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: bold;
}

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

.page-download__download-guide-section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.page-download__guide-card {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
}

.page-download__guide-title {
    font-size: 1.8em;
    color: var(--primary-color);
    margin-bottom: 25px;
    text-align: center;
    font-weight: bold;
}

.page-download__guide-list {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
}

.page-download__guide-list li {
    margin-bottom: 15px;
    padding-left: 25px;
    position: relative;
    color: var(--text-main);
}

.page-download__guide-list li::before {
    content: '•';
    color: var(--gold-color);
    font-size: 1.2em;
    position: absolute;
    left: 0;
    top: 0;
}

.page-download__step-highlight {
    color: var(--primary-color);
}

.page-download__qr-code-wrapper {
    text-align: center;
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.page-download__qr-code {
    width: 200px;
    height: 200px;
    border: 5px solid var(--text-main);
    border-radius: 5px;
    display: block;
}

.page-download__btn-download-apk, .page-download__btn-download-ios {
    width: fit-content;
    max-width: 100%;
}

.page-download__app-features-section {
    padding: 60px 20px;
}

.page-download__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.page-download__feature-item {
    background-color: var(--background-color);
    padding: 25px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.page-download__feature-icon {
    width: 100px;
    height: 100px;
    margin-bottom: 15px;
    object-fit: contain;
    display: block;
}

.page-download__feature-title {
    font-size: 1.4em;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-weight: bold;
}

.page-download__feature-description {
    color: var(--text-secondary);
    font-size: 0.9em;
}

.page-download__security-section {
    padding: 60px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.page-download__security-item {
    background-color: var(--card-bg);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
}

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

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

.page-download__faq-section {
    padding: 60px 20px;
}

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

.page-download__faq-item {
    background-color: var(--card-bg);
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    color: var(--text-main);
}

.page-download__faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 25px;
    font-size: 1.15em;
    font-weight: bold;
    color: var(--primary-color);
    cursor: pointer;
    list-style: none;
}

.page-download__faq-question::-webkit-details-marker, 
.page-download__faq-question::marker {
    display: none;
}

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

.page-download__faq-toggle {
    font-size: 1.5em;
    line-height: 1;
    margin-left: 15px;
    color: var(--gold-color);
}

.page-download__faq-item[open] .page-download__faq-toggle {
    content: '−';
}

.page-download__faq-answer {
    padding: 0 25px 20px 25px;
    font-size: 1em;
    color: var(--text-secondary);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
}

.page-download__faq-item[open] .page-download__faq-answer {
    max-height: 500px; /* Arbitrary large value for smooth transition */
}

.page-download__faq-answer p {
    margin-top: 0;
}

.page-download__cta-final-section {
    text-align: center;
    padding: 60px 20px;
    background-color: var(--background-color);
}

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

.page-download__disclaimer {
    font-size: 0.85em;
    color: var(--text-secondary);
    margin-top: 30px;
}

/* --- Responsive Styles --- */

/* General responsive for images and containers */
.page-download img {
    max-width: 100%;
    height: auto;
    display: block;
}

.page-download__hero-image-wrapper,
.page-download__advantages-section,
.page-download__download-guide-section,
.page-download__app-features-section,
.page-download__security-section,
.page-download__faq-section,
.page-download__cta-final-section {
    max-width: 100%;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

@media (max-width: 1024px) {
    .page-download__main-title {
        font-size: 2.5em;
    }
    .page-download__section-title {
        font-size: 2em;
    }
    .page-download__guide-steps {
        grid-template-columns: 1fr;
    }
    .page-download__advantages-grid,
    .page-download__features-grid,
    .page-download__security-content {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

@media (max-width: 768px) {
    /* HERO 主图区域 */
    .page-download__hero-section {
        padding-top: 10px !important; /* Small top padding, relying on body for header offset */
    }
    .page-download__hero-image {
        max-height: 400px;
    }
    .page-download__main-title {
        font-size: 2em !important;
        padding: 0 15px;
    }
    .page-download__description {
        font-size: 1em !important;
        padding: 0 15px;
    }

    /* 产品展示图区域 (advantage cards, app features) */
    .page-download__advantages-grid,
    .page-download__features-grid,
    .page-download__security-content {
        grid-template-columns: 1fr !important; /* Stack cards vertically */
        padding: 0 15px;
    }
    .page-download__advantage-card, 
    .page-download__feature-item, 
    .page-download__security-item {
        padding: 20px !important;
        margin-bottom: 20px;
    }
    .page-download__advantage-image {
        max-width: 100% !important;
        height: auto !important;
    }

    /* 通用图片与容器 */
    .page-download img {
        max-width: 100% !important;
        width: 100% !important;
        height: auto !important;
    }
    .page-download__section,
    .page-download__card,
    .page-download__container,
    .page-download__hero-image-wrapper,
    .page-download__advantages-section,
    .page-download__download-guide-section,
    .page-download__app-features-section,
    .page-download__security-section,
    .page-download__faq-section,
    .page-download__cta-final-section {
        max-width: 100% !important;
        width: 100% !important;
        box-sizing: border-box !important;
        padding-left: 15px !important;
        padding-right: 15px !important;
    }

    /* 按钮与按钮容器 */
    .page-download__cta-button,
    .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__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 !important;
        padding-right: 15px !important;
        flex-direction: column !important; /* Stack buttons vertically */
        gap: 15px !important;
    }
    .page-download__btn-download-apk, .page-download__btn-download-ios {
        width: 100% !important;
    }

    /* 其他内容模块 */
    .page-download__section-title {
        font-size: 1.8em !important;
        margin-bottom: 30px !important;
        padding-top: 30px !important;
        padding-left: 15px;
        padding-right: 15px;
    }
    .page-download__section-intro {
        font-size: 0.95em !important;
        margin-bottom: 30px !important;
        padding: 0 15px;
    }
    .page-download__guide-steps {
        grid-template-columns: 1fr !important;
        gap: 30px !important;
    }
    .page-download__guide-card {
        padding: 20px !important;
    }
    .page-download__guide-title {
        font-size: 1.5em !important;
    }
    .page-download__faq-question {
        font-size: 1em !important;
        padding: 15px 20px !important;
    }
    .page-download__faq-answer {
        padding: 0 20px 15px 20px !important;
    }
    .page-download__qr-code-wrapper {
        flex-direction: column;
        gap: 15px;
    }
    .page-download__qr-code {
        width: 150px;
        height: 150px;
    }
    .page-download__feature-icon {
        width: 80px;
        height: 80px;
    }
    .page-download__feature-title {
        font-size: 1.2em;
    }
    .page-download__feature-description,
    .page-download__security-text,
    .page-download__advantage-text,
    .page-download__guide-list li {
        font-size: 0.9em;
    }
    .page-download__btn-large {
        padding: 15px 30px !important;
        font-size: 1.1em !important;
    }
}