/* Biến màu sắc */
:root {
    --vin888-primary-color: #FF8C1A;
    --vin888-secondary-color: #FFA53A;
    --vin888-background-color: #0D0E12;
    --vin888-card-background: #17191F;
    --vin888-text-main-color: #FFF3E6;
    --vin888-border-color: #A84F0C;
    --vin888-glow-color: #FFB04D;
    --vin888-deep-orange: #D96800;
    --vin888-button-gradient: linear-gradient(180deg, #FFA53A 0%, #D96800 100%);
}

.page-download {
    font-family: 'Arial', sans-serif;
    color: var(--vin888-text-main-color);
    background-color: var(--vin888-background-color);
    line-height: 1.6;
}

.page-download__section {
    padding: 60px 0;
    position: relative;
}

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

.page-download__container--narrow {
    max-width: 800px;
}

.page-download__section-title {
    font-size: 38px;
    font-weight: 700;
    color: var(--vin888-primary-color);
    text-align: center;
    margin-bottom: 20px;
    text-shadow: 0 0 8px rgba(255, 140, 26, 0.5);
}

.page-download__section-description {
    font-size: 18px;
    text-align: center;
    color: rgba(255, 243, 230, 0.8);
    margin-bottom: 40px;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.page-download__card {
    background-color: var(--vin888-card-background);
    border: 1px solid var(--vin888-border-color);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    box-sizing: border-box;
}

.page-download__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(255, 140, 26, 0.3);
}

.page-download__card-title {
    font-size: 24px;
    font-weight: 600;
    color: var(--vin888-secondary-color);
    margin-top: 0;
    margin-bottom: 15px;
}

.page-download__card-text {
    font-size: 16px;
    color: rgba(255, 243, 230, 0.7);
}

.page-download__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 700;
    text-decoration: none;
    color: #ffffff;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    box-sizing: border-box;
    white-space: normal;
    word-wrap: break-word;
    text-align: center;
}

.page-download__btn--primary {
    background: var(--vin888-button-gradient);
    box-shadow: 0 4px 15px rgba(255, 165, 58, 0.4);
}

.page-download__btn--primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 165, 58, 0.6);
}

.page-download__btn--secondary {
    background-color: transparent;
    border: 2px solid var(--vin888-secondary-color);
    color: var(--vin888-secondary-color);
}

.page-download__btn--secondary:hover {
    background-color: var(--vin888-secondary-color);
    color: var(--vin888-card-background);
    transform: translateY(-2px);
}

.page-download__btn--large {
    padding: 18px 40px;
    font-size: 20px;
}

/* HERO Section */
.page-download__hero-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-top: 10px; /* Small top margin, not var(--header-offset) */
    padding-bottom: 60px;
    position: relative;
    overflow: hidden;
}

.page-download__hero-image-wrapper {
    width: 100%;
    max-height: 700px; /* Adjust as needed */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
}

.page-download__hero-image {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
    filter: brightness(0.7); /* Darken image slightly for text contrast */
}

.page-download__hero-content-wrapper {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 900px;
    padding: 0 20px;
    box-sizing: border-box;
}

.page-download__main-title {
    font-size: 52px;
    font-weight: 800;
    color: var(--vin888-primary-color);
    margin-top: 0;
    margin-bottom: 20px;
    line-height: 1.2;
    text-shadow: 0 0 15px rgba(255, 140, 26, 0.7);
}

.page-download__main-description {
    font-size: 20px;
    color: rgba(255, 243, 230, 0.9);
    margin-bottom: 40px;
}

.page-download__cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    width: 100%;
}

/* Info Section */
.page-download__features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

/* Guide Section */
.page-download__download-steps {
    display: flex;
    gap: 40px;
    justify-content: center;
    flex-wrap: wrap;
}

.page-download__step-card {
    flex: 1 1 45%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.page-download__step-image {
    width: 100%;
    max-width: 400px;
    height: auto;
    margin-bottom: 25px;
    border-radius: 8px;
    border: 1px solid var(--vin888-border-color);
}

.page-download__step-list {
    list-style-type: decimal;
    padding-left: 20px;
    margin: 0 0 30px 0;
    text-align: left;
    color: rgba(255, 243, 230, 0.7);
    font-size: 16px;
}

.page-download__step-list li {
    margin-bottom: 10px;
}

/* Features Showcase */
.page-download__feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.page-download__content-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--vin888-border-color);
}

/* Security Section */
.page-download__dark-section {
    background-color: var(--vin888-deep-orange);
    color: #ffffff;
}

.page-download__dark-section .page-download__section-title {
    color: #ffffff;
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.page-download__dark-section .page-download__section-description {
    color: rgba(255, 255, 255, 0.9);
}

.page-download__security-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.page-download__security-item {
    text-align: center;
    background-color: rgba(0, 0, 0, 0.2);
    padding: 25px;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.page-download__security-item .page-download__item-title {
    font-size: 22px;
    color: var(--vin888-glow-color);
    margin-top: 0;
    margin-bottom: 10px;
}

.page-download__security-item .page-download__item-text {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.8);
}

.page-download__security-image {
    width: 100%;
    max-width: 800px;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 12px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid var(--vin888-glow-color);
}

/* FAQ Section */
details.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 12px;
  border: 1px solid var(--vin888-border-color);
  overflow: hidden;
  background: var(--vin888-card-background);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}
details.page-download__faq-item summary.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 25px;
  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: rgba(255, 140, 26, 0.1);
}
.page-download__faq-qtext {
  flex: 1;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--vin888-text-main-color);
}
.page-download__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--vin888-secondary-color);
  flex-shrink: 0;
  margin-left: 20px;
  width: 32px;
  text-align: center;
}
details.page-download__faq-item .page-download__faq-answer {
  padding: 0 25px 20px;
  background: var(--vin888-card-background);
  border-radius: 0 0 12px 12px;
  color: rgba(255, 243, 230, 0.7);
  font-size: 16px;
}
details.page-download__faq-item .page-download__faq-answer p {
    margin: 0;
}

/* Final CTA Section */
.page-download__cta-final-section {
    background-color: var(--vin888-card-background);
    border-top: 1px solid var(--vin888-border-color);
    text-align: center;
}

.page-download__cta-final-section .page-download__section-title {
    color: var(--vin888-primary-color);
    margin-bottom: 25px;
}

.page-download__cta-final-section .page-download__section-description {
    margin-bottom: 30px;
}

/* Universal Image Responsiveness (important for all images) */
.page-download img {
    max-width: 100%;
    height: auto;
    display: block;
}

.page-download__hero-image-wrapper,
.page-download__container,
.page-download__cta-buttons,
.page-download__download-steps,
.page-download__features-grid,
.page-download__feature-list,
.page-download__security-features {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden; /* Prevent horizontal scroll for contained elements */
}

/* Media Queries for Responsiveness */
@media (max-width: 1024px) {
    .page-download__main-title {
        font-size: 44px;
    }
    .page-download__section-title {
        font-size: 34px;
    }
    .page-download__btn--large {
        padding: 15px 30px;
        font-size: 18px;
    }
    .page-download__download-steps {
        flex-direction: column;
        align-items: center;
    }
    .page-download__step-card {
        max-width: 100%;
        flex: 1 1 100%;
    }
    .page-download__feature-list {
        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;
        padding-bottom: 40px;
    }
    .page-download__hero-image-wrapper {
        max-height: 400px;
    }
    .page-download__hero-image {
        object-fit: contain !important; /* Prevent cropping on mobile */
        aspect-ratio: unset !important; /* Allow natural aspect ratio */
    }
    .page-download__main-title {
        font-size: 32px !important;
        margin-bottom: 15px;
    }
    .page-download__main-description {
        font-size: 16px !important;
        margin-bottom: 30px;
    }
    .page-download__cta-buttons {
        flex-direction: column !important;
        gap: 15px;
        padding: 0 15px;
    }

    /* 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 {
        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__btn,
    .page-download__btn--primary,
    .page-download__btn--secondary,
    .page-download__btn--large {
        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;
        padding-right: 15px;
        flex-wrap: wrap !important; /* Ensure buttons wrap */
        gap: 15px;
    }

    /* 各模块的 768px 规则 */
    .page-download__section {
        padding: 40px 0;
    }
    .page-download__section-title {
        font-size: 28px !important;
        margin-bottom: 15px;
    }
    .page-download__section-description {
        font-size: 15px !important;
        margin-bottom: 30px;
    }
    .page-download__features-grid,
    .page-download__feature-list,
    .page-download__security-features {
        grid-template-columns: 1fr;
        gap: 25px;
    }
    .page-download__step-list {
        padding-left: 15px;
    }
    .page-download__step-card .page-download__btn {
        max-width: 280px !important; /* Limit individual button width in step card */
        width: 100% !important;
    }
    details.page-download__faq-item summary.page-download__faq-question {
        padding: 15px;
    }
    .page-download__faq-qtext {
        font-size: 16px;
    }
    .page-download__faq-toggle {
        font-size: 24px;
        width: 28px;
    }
    details.page-download__faq-item .page-download__faq-answer {
        padding: 0 15px 15px;
    }
    .page-download__content-image, .page-download__security-image {
        border-radius: 8px;
    }
}