/* style/download.css */
:root {
  --primary-color: #2F6BFF;
  --secondary-color: #6FA3FF;
  --card-bg-color: #FFFFFF;
  --bg-color: #F4F7FB;
  --text-main-color: #1F2D3D;
  --border-color: #D6E2FF;
  --glow-color: #A5C4FF;
  --button-gradient: linear-gradient(180deg, #4A8BFF 0%, #2F6BFF 100%);
}

.page-download {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-main-color);
  background-color: var(--bg-color); /* Body background handled by shared, this is for page sections */
}

/* 智能文字颜色选择器 - 必须实现 */
.page-download__dark-bg {
  color: #ffffff; /* 深色背景配浅色文字 */
  background-color: var(--primary-color);
}

.page-download__light-bg {
  color: var(--text-main-color); /* 浅色背景配深色文字 */
  background-color: var(--bg-color);
}

.page-download__card {
  background-color: var(--card-bg-color);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  padding: 25px;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-download__card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.page-download__section {
  padding: 60px 0;
  text-align: center;
}

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

.page-download__section-title {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text-main-color);
}

.page-download__dark-bg .page-download__section-title,
.page-download__dark-bg .page-download__section-description {
  color: #ffffff;
}

.page-download__section-description {
  font-size: 18px;
  margin-bottom: 40px;
  line-height: 1.8;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* HERO Section */
.page-download__hero-section {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 60px 20px;
  padding-top: 10px; /* Small top padding, body handles header offset */
  overflow: hidden;
}

.page-download__hero-container {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.page-download__hero-image {
  width: 100%;
  margin-bottom: 30px;
}

.page-download__hero-image img {
  width: 100%;
  height: auto;
  max-width: 100%;
  display: block;
  border-radius: 12px;
  object-fit: cover;
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.page-download__hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  width: 100%;
}

.page-download__main-title {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 20px;
  line-height: 1.2;
  color: #ffffff;
}

.page-download__hero-description {
  font-size: 22px;
  margin-bottom: 40px;
  color: rgba(255, 255, 255, 0.9);
}

.page-download__cta-button {
  display: inline-block;
  padding: 18px 45px;
  background: var(--button-gradient);
  color: #ffffff;
  text-decoration: none;
  border-radius: 10px;
  font-size: 20px;
  font-weight: bold;
  margin-top: 20px;
  transition: all 0.3s ease;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2);
  border: none;
  cursor: pointer;
}

.page-download__cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  opacity: 0.9;
}

/* Why Download Section */
.page-download__why-download {
  padding-bottom: 80px;
}

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

.page-download__feature-item {
  text-align: left;
  padding: 30px;
}

.page-download__feature-item img {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 20px;
  object-fit: cover;
}

.page-download__feature-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-download__feature-item p {
  font-size: 16px;
  color: var(--text-main-color);
}

/* How to Download Section */
.page-download__how-to-download {
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-download__download-steps {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 40px;
  margin-top: 50px;
}

.page-download__step-block {
  flex: 1 1 45%;
  min-width: 300px;
  background-color: var(--card-bg-color);
  padding: 35px;
  border-radius: 12px;
  text-align: left;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-download__step-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 25px;
  color: var(--primary-color);
  text-align: center;
}

.page-download__step-content {
  width: 100%;
  margin-bottom: 30px;
}

.page-download__step-item {
  display: flex;
  align-items: flex-start;
  margin-bottom: 20px;
}

.page-download__step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 35px;
  height: 35px;
  background-color: var(--secondary-color);
  color: #ffffff;
  border-radius: 50%;
  font-weight: bold;
  font-size: 18px;
  flex-shrink: 0;
  margin-right: 15px;
}

.page-download__step-item p {
  margin: 0;
  font-size: 16px;
  color: var(--text-main-color);
  flex: 1;
}

.page-download__qr-code {
  width: 200px;
  height: 200px;
  border-radius: 8px;
  border: 5px solid #ffffff;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  margin-top: 20px;
}

.page-download__important-note {
  font-size: 16px;
  color: #ffffff;
  margin-top: 40px;
  font-weight: 500;
}

/* App Features Section */
.page-download__app-features {
  padding-top: 80px;
  padding-bottom: 80px;
}

.page-download__feature-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 50px;
}

.page-download__feature-card {
  text-align: center;
  padding: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.page-download__feature-card img {
  width: 100%;
  height: auto;
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 25px;
  object-fit: cover;
}

.page-download__feature-card-title {
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 15px;
  color: var(--primary-color);
}

.page-download__feature-card p {
  font-size: 16px;
  color: var(--text-main-color);
  margin-bottom: 25px;
  flex-grow: 1;
}

.page-download__btn-secondary {
  display: inline-block;
  padding: 12px 25px;
  background-color: #ffffff;
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.page-download__btn-secondary:hover {
  background-color: var(--primary-color);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* FAQ Section */
.page-download__faq-section {
  padding-bottom: 80px;
}

.page-download__faq-list {
  margin-top: 50px;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

details.page-download__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  overflow: hidden;
  background-color: var(--card-bg-color);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

details.page-download__faq-item summary.page-download__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 25px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
  font-size: 18px;
  font-weight: 600;
  color: var(--text-main-color);
}

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-color: rgba(var(--primary-color), 0.05);
}

.page-download__faq-qtext {
  flex: 1;
  line-height: 1.5;
  text-align: left;
}

.page-download__faq-toggle {
  font-size: 28px;
  font-weight: bold;
  color: var(--primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 30px;
  text-align: center;
}

details.page-download__faq-item .page-download__faq-answer {
  padding: 0 25px 25px;
  background-color: #f9fbfd;
  border-radius: 0 0 10px 10px;
  text-align: left;
}

.page-download__faq-answer p {
  margin: 0;
  font-size: 16px;
  color: var(--text-main-color);
}

/* CTA Bottom Section */
.page-download__cta-bottom {
  padding-top: 80px;
  padding-bottom: 80px;
}

/* Responsive Design */
@media (max-width: 1024px) {
  .page-download__main-title {
    font-size: 42px;
  }
  .page-download__hero-description {
    font-size: 20px;
  }
  .page-download__section-title {
    font-size: 32px;
  }
  .page-download__section-description {
    font-size: 17px;
  }
  .page-download__feature-title {
    font-size: 22px;
  }
  .page-download__step-title {
    font-size: 26px;
  }
  .page-download__feature-card-title {
    font-size: 22px;
  }
  .page-download__qr-code {
    width: 180px;
    height: 180px;
  }
}

@media (max-width: 768px) {
  .page-download {
    font-size: 16px;
    line-height: 1.6;
  }
  .page-download__section {
    padding: 40px 0;
  }
  .page-download__container {
    padding: 0 15px;
  }
  .page-download__hero-section {
    padding-top: 10px !important;
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-download__hero-image img {
    border-radius: 8px;
  }
  .page-download__main-title {
    font-size: 32px;
    line-height: 1.3;
  }
  .page-download__hero-description {
    font-size: 18px;
    margin-bottom: 30px;
  }
  .page-download__cta-button {
    padding: 15px 30px;
    font-size: 18px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  
  .page-download__section-title {
    font-size: 28px;
  }
  .page-download__section-description {
    font-size: 16px;
    margin-bottom: 30px;
  }

  .page-download__feature-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .page-download__feature-item {
    padding: 20px;
  }
  .page-download__feature-title {
    font-size: 20px;
  }

  .page-download__download-steps {
    flex-direction: column;
    gap: 30px;
  }
  .page-download__step-block {
    min-width: unset;
    padding: 25px;
  }
  .page-download__step-title {
    font-size: 22px;
  }
  .page-download__step-item p {
    font-size: 15px;
  }
  .page-download__qr-code {
    width: 150px;
    height: 150px;
  }
  .page-download__important-note {
    font-size: 15px;
  }

  .page-download__feature-list {
    grid-template-columns: 1fr;
    gap: 25px;
  }
  .page-download__feature-card {
    padding: 25px;
  }
  .page-download__feature-card-title {
    font-size: 20px;
  }
  .page-download__feature-card p {
    font-size: 15px;
  }
  .page-download__btn-secondary {
    padding: 10px 20px;
    font-size: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  details.page-download__faq-item summary.page-download__faq-question {
    padding: 15px 20px;
    font-size: 16px;
  }
  .page-download__faq-qtext {
    font-size: 16px;
  }
  .page-download__faq-toggle {
    font-size: 24px;
    width: 25px;
  }
  details.page-download__faq-item .page-download__faq-answer {
    padding: 0 20px 20px;
  }
  .page-download__faq-answer p {
    font-size: 15px;
  }

  /* Mobile image and button responsive rules */
  .page-download img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }
  .page-download__section,
  .page-download__card,
  .page-download__container,
  .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;
  }
  .page-download__cta-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
  }
}

@media (max-width: 480px) {
  .page-download__main-title {
    font-size: 28px;
  }
  .page-download__hero-description {
    font-size: 16px;
  }
  .page-download__section-title {
    font-size: 24px;
  }
  .page-download__cta-button {
    font-size: 16px;
    padding: 12px 25px;
  }
  .page-download__qr-code {
    width: 120px;
    height: 120px;
  }
  .page-download__step-block {
    padding: 20px;
  }
  .page-download__step-title {
    font-size: 20px;
  }
  details.page-download__faq-item summary.page-download__faq-question {
    font-size: 15px;
  }
  .page-download__faq-qtext {
    font-size: 15px;
  }
}