/* style/download-app.css */
.page-download-app {
    font-family: 'Arial', sans-serif;
    color: #E0E0E0; /* Light gray for general text */
    background-color: #1A202C; /* Main dark background */
    line-height: 1.6;
}

.page-download-app__container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.page-download-app__highlight {
    color: #FFD700; /* Auxiliary gold for highlights */
    font-weight: bold;
}

.page-download-app__hero-section {
    background: linear-gradient(135deg, #1A202C 0%, #3a475a 100%); /* Dark gradient */
    padding: 100px 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-download-app__hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('[GALLERY:bg:abstract,geometric,dark_pattern]');
    background-size: cover;
    opacity: 0.1;
    z-index: 0;
}

.page-download-app__hero-section > div {
    position: relative;
    z-index: 1;
}

.page-download-app__hero-title {
    font-size: 3.5em;
    margin-bottom: 20px;
    color: #FFFFFF; /* White for main titles */
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.page-download-app__hero-subtitle {
    font-size: 1.3em;
    margin-bottom: 40px;
    color: #CCCCCC; /* Lighter gray for subtitles */
}

.page-download-app__download-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.page-download-app__qr-code {
    margin-top: 30px;
    background-color: rgba(0, 0, 0, 0.3);
    padding: 20px;
    border-radius: 10px;
    display: inline-block;
}

.page-download-app__qr-image {
    width: 150px;
    height: 150px;
    display: block;
    margin: 0 auto 15px auto;
    border: 5px solid #FFD700;
    border-radius: 5px;
}

.page-download-app__qr-code p {
    font-size: 1.1em;
    color: #FFD700;
    font-weight: bold;
}

.page-download-app__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 1.1em;
    transition: background-color 0.3s ease, transform 0.3s ease;
    white-space: nowrap;
}

.page-download-app__btn i {
    margin-right: 10px;
    font-size: 1.2em; /* Assuming icon fonts are used */
}

.page-download-app__btn--primary {
    background-color: #FFD700; /* Gold */
    color: #1A202C; /* Dark text */
    border: 2px solid #FFD700;
}

.page-download-app__btn--primary:hover {
    background-color: #e5c100; /* Slightly darker gold */
    transform: translateY(-3px);
}

.page-download-app__btn--secondary {
    background-color: #1A202C; /* Dark blue */
    color: #FFD700; /* Gold text */
    border: 2px solid #FFD700;
}

.page-download-app__btn--secondary:hover {
    background-color: #0d121c; /* Even darker blue */
    transform: translateY(-3px);
}

.page-download-app__btn--outline {
    background-color: transparent;
    color: #FFD700;
    border: 2px solid #FFD700;
    padding: 10px 20px;
    font-size: 1em;
}

.page-download-app__btn--outline:hover {
    background-color: #FFD700;
    color: #1A202C;
    transform: translateY(-2px);
}

.page-download-app__btn--small {
    padding: 10px 20px;
    font-size: 1em;
}

.page-download-app__btn--large {
    padding: 18px 35px;
    font-size: 1.2em;
}

.page-download-app__section-title {
    font-size: 2.5em;
    color: #FFFFFF;
    text-align: center;
    margin-bottom: 40px;
    padding-top: 60px;
    position: relative;
}

.page-download-app__section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: #FFD700;
    margin: 15px auto 0 auto;
    border-radius: 2px;
}

.page-download-app__subsection-title {
    font-size: 1.8em;
    color: #FFD700;
    margin-top: 40px;
    margin-bottom: 25px;
    text-align: center;
}

.page-download-app__text-content {
    font-size: 1.1em;
    color: #E0E0E0;
    margin-bottom: 20px;
    text-align: justify;
}

.page-download-app__introduction-section,
.page-download-app__download-guide-section,
.page-download-app__features-overview-section,
.page-download-app__related-guides-section,
.page-download-app__cta-section {
    padding: 60px 0;
}

.page-download-app__introduction-section {
    background-color: #28303f;
}

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

.page-download-app__feature-item {
    background-color: #1A202C;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.page-download-app__feature-item:hover {
    transform: translateY(-10px);
}

.page-download-app__feature-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 5px #FFD700);
}

.page-download-app__feature-item h3 {
    font-size: 1.5em;
    color: #FFD700;
    margin-bottom: 15px;
}

.page-download-app__feature-item p {
    font-size: 1em;
    color: #CCCCCC;
}

.page-download-app__tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    gap: 15px;
    flex-wrap: wrap;
}

.page-download-app__tab-btn {
    background-color: #3a475a; /* Darker blue-gray */
    color: #FFD700;
    border: 2px solid #FFD700;
    padding: 12px 25px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: bold;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.page-download-app__tab-btn:hover {
    background-color: #4a5c73;
}

.page-download-app__tab-btn--active {
    background-color: #FFD700;
    color: #1A202C;
    border-color: #FFD700;
}

.page-download-app__tab-content {
    display: none;
    background-color: #28303f;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
}

.page-download-app__tab-content--active {
    display: block;
}

.page-download-app__guide-list {
    list-style: none;
    padding: 0;
    counter-reset: guide-step;
    margin-top: 30px;
}

.page-download-app__guide-list li {
    margin-bottom: 30px;
    padding-left: 70px;
    position: relative;
}

.page-download-app__guide-list li::before {
    counter-increment: guide-step;
    content: counter(guide-step);
    position: absolute;
    left: 0;
    top: 0;
    background-color: #FFD700;
    color: #1A202C;
    width: 45px;
    height: 45px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8em;
    font-weight: bold;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.page-download-app__guide-list li p {
    margin-bottom: 10px;
    font-size: 1.1em;
    color: #E0E0E0;
}

.page-download-app__guide-image {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin-top: 15px;
    border: 2px solid #FFD700;
    box-shadow: 0 0 10px rgba(255, 215, 0, 0.3);
}

.page-download-app__link {
    color: #FFD700;
    text-decoration: underline;
    font-weight: bold;
}

.page-download-app__link:hover {
    color: #e5c100;
}

.page-download-app__features-overview-section {
    background-color: #1A202C;
}

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

.page-download-app__feature-card {
    background-color: #28303f;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.page-download-app__feature-card:hover {
    transform: translateY(-10px);
}

.page-download-app__card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 15px;
    filter: drop-shadow(0 0 3px #FFD700);
}

.page-download-app__feature-card h3 {
    font-size: 1.6em;
    color: #FFD700;
    margin-bottom: 10px;
}

.page-download-app__feature-card p {
    font-size: 1em;
    color: #CCCCCC;
}

.page-download-app__related-guides-section {
    background-color: #28303f;
}

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

.page-download-app__guide-card {
    background-color: #1A202C;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: transform 0.3s ease;
}

.page-download-app__guide-card:hover {
    transform: translateY(-10px);
}

.page-download-app__guide-card h3 {
    font-size: 1.4em;
    color: #FFFFFF;
    margin-bottom: 15px;
}

.page-download-app__guide-card p {
    font-size: 0.95em;
    color: #B0B0B0;
    margin-bottom: 20px;
    flex-grow: 1;
}

.page-download-app__cta-section {
    text-align: center;
    padding: 80px 0;
    background-color: #1A202C;
    border-top: 5px solid #FFD700;
}

.page-download-app__cta-section .page-download-app__section-title {
    padding-top: 0;
}

.page-download-app__disclaimer {
    font-size: 0.9em;
    color: #888;
    margin-top: 30px;
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    .page-download-app__hero-title {
        font-size: 2.8em;
    }

    .page-download-app__section-title {
        font-size: 2em;
    }
}

@media (max-width: 768px) {
    .page-download-app__hero-title {
        font-size: 2.2em;
    }

    .page-download-app__hero-subtitle {
        font-size: 1.1em;
    }

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

    .page-download-app__btn {
        width: 80%;
        margin: 0 auto;
    }

    .page-download-app__section-title {
        font-size: 1.8em;
    }

    .page-download-app__subsection-title {
        font-size: 1.5em;
    }

    .page-download-app__guide-list li {
        padding-left: 60px;
    }

    .page-download-app__guide-list li::before {
        width: 40px;
        height: 40px;
        font-size: 1.5em;
    }

    .page-download-app__tab-btn {
        padding: 10px 20px;
        font-size: 1em;
    }

    .page-download-app__tab-content {
        padding: 30px;
    }

    .page-download-app__features-grid,
    .page-download-app__feature-cards-grid,
    .page-download-app__guide-cards-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .page-download-app__hero-title {
        font-size: 1.8em;
    }

    .page-download-app__hero-subtitle {
        font-size: 1em;
    }

    .page-download-app__btn {
        width: 100%;
        font-size: 1em;
        padding: 12px 20px;
    }

    .page-download-app__section-title {
        font-size: 1.5em;
    }

    .page-download-app__subsection-title {
        font-size: 1.3em;
    }

    .page-download-app__tab-btn {
        width: 100%;
    }

    .page-download-app__tab-content {
        padding: 20px;
    }

    .page-download-app__guide-list li {
        padding-left: 50px;
    }

    .page-download-app__guide-list li::before {
        width: 35px;
        height: 35px;
        font-size: 1.3em;
    }

    .page-download-app__feature-item h3,
    .page-download-app__feature-card h3,
    .page-download-app__guide-card h3 {
        font-size: 1.3em;
    }
}

/* Icon styles (assuming font awesome or similar is used via shared.css or directly) */
/* Placeholder for icon styles if not handled by an icon library */
.icon-android::before { content: '安卓'; /* Replace with actual icon font character */ }
.icon-apple::before { content: '苹果'; /* Replace with actual icon font character */ }