.page-download__hero-section { position: relative; width: 100%; overflow: hidden; }
.page-download__hero-image { position: relative; width: 100%; height: 0; padding-bottom: 31.25%; /* 1920x600 aspect ratio */ overflow: hidden; }
.page-download__hero-image img { position: absolute; top: 0; left: 0; width: 100%; height: 100%; object-fit: cover; }
.page-download__hero-content { padding: 40px 15px; text-align: center; max-width: 900px; margin: 0 auto; }
.page-download__main-title { font-size: 3.2em; font-weight: 700; color: #FFF5E1; line-height: 1.2; margin-bottom: 20px; }
.page-download__description { font-size: 1.2em; color: #f0f0f0; margin-bottom: 30px; }
.page-download__cta-buttons { display: flex; justify-content: center; gap: 20px; }
.page-download__btn-primary, .page-download__btn-secondary { display: inline-block; padding: 15px 30px; border-radius: 8px; font-size: 1.1em; font-weight: 600; text-decoration: none; transition: all 0.3s ease; max-width: 100%; box-sizing: border-box; white-space: normal; word-wrap: break-word; }
.page-download__btn-primary { background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%); color: #7A0E0E; border: none; }
.page-download__btn-primary:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(255, 216, 106, 0.4); }
.page-download__btn-secondary { background: #D32F2F; color: #FFF5E1; border: 2px solid #F2B544; }
.page-download__btn-secondary:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(242, 181, 68, 0.4); }

.page-download__introduction-section, .page-download__benefits-section { padding: 60px 0; }
.page-download__dark-section { background: #B71C1C; color: #FFF5E1; }
.page-download__container { max-width: 1200px; margin: 0 auto; padding: 0 15px; }
.page-download__section-title { font-size: 2.8em; font-weight: 700; text-align: center; margin-bottom: 40px; color: #FFF5E1; }
.page-download__introduction-section .page-download__section-title { color: #FFF5E1; }
.page-download__text-block { font-size: 1.1em; line-height: 1.7; text-align: center; max-width: 900px; margin: 0 auto 50px; color: #f0f0f0; }

.page-download__features-grid, .page-download__benefits-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 30px; margin-top: 40px; }
.page-download__feature-card, .page-download__benefit-item { background: #D32F2F; border-radius: 12px; padding: 30px; text-align: center; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2); transition: transform 0.3s ease; color: #FFF5E1; }
.page-download__feature-card:hover, .page-download__benefit-item:hover { transform: translateY(-5px); }
.page-download__feature-card img {   margin-bottom: 20px; object-fit: contain; display: block; margin-left: auto; margin-right: auto; min-width: 200px; min-height: 200px; max-width: 200px; max-height: 200px; }
.page-download__feature-title, .page-download__benefit-title { font-size: 1.6em; font-weight: 700; margin-bottom: 15px; color: #F4D34D; }
.page-download__feature-description, .page-download__benefit-description { font-size: 1em; line-height: 1.6; color: #f0f0f0; }

.page-download__download-guide-section { padding: 60px 0; background: #B71C1C; color: #FFF5E1; }
.page-download__download-guide-section .page-download__section-title { color: #FFF5E1; }
.page-download__guide-tabs { display: flex; justify-content: center; margin-bottom: 40px; gap: 15px; }
.page-download__tab-button { background: #D32F2F; color: #FFF5E1; border: 2px solid #F2B544; padding: 12px 25px; border-radius: 8px; cursor: pointer; font-size: 1.1em; font-weight: 600; transition: all 0.3s ease; }
.page-download__tab-button:hover, .page-download__tab-button--active { background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%); color: #7A0E0E; border-color: transparent; }

.page-download__tab-content { display: none; }
.page-download__tab-content--active { display: block; }
.page-download__sub-section-title { font-size: 2.2em; font-weight: 700; margin-top: 30px; margin-bottom: 25px; text-align: center; color: #F4D34D; }
.page-download__guide-list { list-style: none; counter-reset: guide-counter; padding: 0; max-width: 800px; margin: 0 auto 40px; }
.page-download__guide-list li { position: relative; margin-bottom: 25px; padding-left: 45px; font-size: 1.1em; line-height: 1.7; color: #f0f0f0; }
.page-download__guide-list li::before { counter-increment: guide-counter; content: counter(guide-counter); position: absolute; left: 0; top: 0; background: linear-gradient(180deg, #FFD86A 0%, #E6B800 100%); color: #7A0E0E; width: 35px; height: 35px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 1.2em; }
.page-download__guide-list img { width: 100%; height: auto; display: block; margin-top: 30px; border-radius: 8px; box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); min-width: 200px; min-height: 200px; }

.page-download__cta-bottom { text-align: center; margin-top: 50px; }

.page-download__faq-section { padding: 60px 0; background: #B71C1C; color: #FFF5E1; }
.page-download__faq-section .page-download__section-title { color: #FFF5E1; }
.page-download__faq-list { max-width: 900px; margin: 0 auto; }
.page-download__faq-item { background: #D32F2F; border-radius: 12px; margin-bottom: 15px; box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); overflow: hidden; }
.page-download__faq-question { display: flex; justify-content: space-between; align-items: center; padding: 20px 25px; cursor: pointer; font-size: 1.3em; font-weight: 600; color: #F4D34D; transition: background 0.3s ease; list-style: none; }
.page-download__faq-question::-webkit-details-marker { display: none; }
.page-download__faq-question:hover { background: rgba(255, 255, 255, 0.1); }
.page-download__faq-qtext { flex-grow: 1; }
.page-download__faq-toggle { font-size: 1.8em; line-height: 1; margin-left: 15px; transition: transform 0.3s ease; }
.page-download__faq-item[open] .page-download__faq-toggle { transform: rotate(45deg); }
.page-download__faq-answer { padding: 0 25px 20px; font-size: 1.1em; line-height: 1.7; color: #f0f0f0; }

/* 响应式设计 */
@media (max-width: 1024px) {
  .page-download__main-title { font-size: 2.8em; }
  .page-download__section-title { font-size: 2.4em; }
  .page-download__sub-section-title { font-size: 2em; }
  .page-download__features-grid, .page-download__benefits-grid { grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); }
}

@media (max-width: 768px) {
  .page-download__hero-content { padding: 30px 15px; }
  .page-download__main-title { font-size: 2.2em; max-width: 100% !important; }
  .page-download__description { font-size: 1em; }
  .page-download__cta-buttons { flex-direction: column; gap: 15px; max-width: 100% !important; width: 100% !important; box-sizing: border-box !important; padding-left: 15px; padding-right: 15px; }
  .page-download__btn-primary, .page-download__btn-secondary { width: 100% !important; max-width: 100% !important; padding: 12px 20px; font-size: 1em; white-space: normal !important; word-wrap: break-word !important; box-sizing: border-box !important; }
  
  .page-download__introduction-section, .page-download__benefits-section, .page-download__download-guide-section, .page-download__faq-section { padding: 40px 0; }
  .page-download__section-title { font-size: 2em; margin-bottom: 30px; }
  .page-download__text-block { font-size: 0.95em; margin-bottom: 40px; }
  .page-download__features-grid, .page-download__benefits-grid { grid-template-columns: 1fr; gap: 20px; }
  .page-download__feature-card, .page-download__benefit-item { padding: 25px; }
  .page-download__feature-title, .page-download__benefit-title { font-size: 1.4em; }
  .page-download__feature-description, .page-download__benefit-description { font-size: 0.9em; }

  .page-download__tab-button { padding: 10px 18px; font-size: 0.95em; }
  .page-download__sub-section-title { font-size: 1.8em; }
  .page-download__guide-list li { font-size: 1em; padding-left: 40px; }
  .page-download__guide-list li::before { width: 30px; height: 30px; font-size: 1em; }
  .page-download__guide-list img { max-width: 100% !important; width: 100% !important; height: auto !important; box-sizing: border-box !important; }

  .page-download__faq-question { font-size: 1.1em; padding: 18px 20px; }
  .page-download__faq-answer { padding: 0 20px 18px; font-size: 1em; }
  .page-download__faq-toggle { font-size: 1.5em; }

  /* General image and container responsiveness */
  .page-download img { max-width: 100% !important; width: 100% !important; height: auto !important; display: block !important; }
  .page-download__container, .page-download__section, .page-download__card, .page-download__tab-content, .page-download__faq-list, .page-download__guide-list {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-download__features-grid, .page-download__benefits-grid {
    flex-wrap: wrap !important;
    gap: 15px;
  }
  .page-download__hero-section { padding-top: 10px; }
}

@media (max-width: 480px) {
  .page-download__main-title { font-size: 1.8em; }
  .page-download__section-title { font-size: 1.6em; }
  .page-download__sub-section-title { font-size: 1.5em; }
  .page-download__tab-button { font-size: 0.85em; padding: 8px 15px; }
  .page-download__faq-question { font-size: 1em; padding: 15px; }
  .page-download__faq-answer { font-size: 0.9em; }
}