/* style/index.css */
/* 页面完整样式代码 - 注意：所有选择器必须使用BEM命名规则（双下划线__连接） */

:root {
  --primary-color: #017439; /* 主色调 */
  --secondary-color: #C30808; /* 注册/登录按钮色 */
  --text-color-dark-bg: #FFFFFF; /* 深色背景文字 */
  --text-color-light-bg: #333333; /* 浅色背景文字 */
  --background-color-light: #FFFFFF; /* 浅色背景 */
  --background-color-dark: #1a1a2e; /* body背景色 */
  --highlight-text-color: #FFFF00; /* 注册/登录字体高亮 */
}

/* Base styles for the page content */
.page-index {
  font-family: 'Arial', sans-serif;
  line-height: 1.6;
  color: var(--text-color-dark-bg); /* Default text color for dark body background */
  background-color: var(--background-color-dark); /* Inherits from shared, but for clarity */
}

/* General container styling */
.page-index__container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 40px 20px;
  box-sizing: border-box;
}

/* Smart color contrast */
.page-index__dark-bg {
  background-color: var(--background-color-dark);
  color: var(--text-color-dark-bg);
}

.page-index__light-bg {
  background-color: var(--background-color-light);
  color: var(--text-color-light-bg);
}

/* Headings */
.page-index h1,
.page-index h2,
.page-index h3 {
  color: var(--text-color-dark-bg); /* Default for dark background */
  margin-top: 0;
  margin-bottom: 20px;
  line-height: 1.2;
}

.page-index__light-bg h1,
.page-index__light-bg h2,
.page-index__light-bg h3 {
  color: var(--text-color-light-bg); /* For light background sections */
}

.page-index__main-title {
  font-size: 3.2em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 20px;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.page-index__title-description {
  font-size: 1.1em;
  text-align: center;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: #f0f0f0; /* Slightly off-white for description on dark bg */
}

/* General button styles */
.page-index__cta-button,
.page-index__play-now-button,
.page-index__view-all-button {
  display: inline-block;
  padding: 15px 40px;
  border-radius: 8px;
  font-size: 1.1em;
  font-weight: bold;
  text-align: center;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  border: none;
  cursor: pointer;
}

.page-index__btn-primary {
  background: var(--secondary-color); /* Use C30808 for primary action */
  color: var(--highlight-text-color); /* Use FFFF00 for text on primary button */
}

.page-index__btn-primary:hover {
  background: #a80707; /* Darker shade for hover */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

.page-index__btn-secondary {
  background: var(--primary-color); /* Use 017439 for secondary action */
  color: var(--text-color-dark-bg); /* Use FFFFFF for text on secondary button */
}

.page-index__btn-secondary:hover {
  background: #005f2f; /* Darker shade for hover */
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
}

/* Video Section */
.page-index__video-section {
  position: relative;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
  padding-top: var(--header-offset, 120px); /* Ensure spacing below fixed header */
  background-color: var(--background-color-dark);
}

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

.page-index__video-link {
  display: block;
  text-decoration: none;
  position: relative;
  width: 100%;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.page-index__video-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

.page-index__video-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  height: 0;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.page-index__video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: 8px;
  object-fit: cover;
  pointer-events: none; /* Prevent video controls from blocking click event */
}

.page-index__video-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 1;
}

.page-index__video-link:hover .page-index__video-overlay {
  opacity: 1;
}

.page-index__video-click-hint {
  color: #ffffff;
  font-size: 18px;
  font-weight: bold;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
  padding: 10px 20px;
  background: rgba(0, 123, 255, 0.8);
  border-radius: 5px;
  white-space: nowrap;
}

.page-index__video-cta {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: 30px;
}

.page-index__play-now-button {
  background: var(--secondary-color); /* Use C30808 for Play Now */
  color: var(--highlight-text-color); /* Use FFFF00 for text on Play Now */
  font-size: 20px;
  padding: 18px 50px;
  border-radius: 10px;
  box-shadow: 0 6px 15px rgba(195, 8, 8, 0.4);
}

.page-index__play-now-button:hover {
  background: #a80707;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(195, 8, 8, 0.6);
}

/* H1 Title Section */
.page-index__title-section {
  padding: 80px 20px;
  text-align: center;
  background: linear-gradient(135deg, var(--background-color-dark) 0%, #3a0e0e 100%); /* Darker gradient */
  color: var(--text-color-dark-bg);
}

.page-index__title-container {
  max-width: 1000px;
  margin: 0 auto;
}

.page-index__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-top: 40px;
}

/* Brand Section */
.page-index__brand-section {
  padding: 80px 20px;
  text-align: center;
  background-color: var(--background-color-light);
  color: var(--text-color-light-bg);
}

.page-index__brand-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__brand-title {
  font-size: 2.5em;
  font-weight: bold;
  margin-bottom: 50px;
  color: var(--primary-color); /* Brand color for main title */
}

.page-index__brand-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.page-index__brand-item {
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  padding: 30px;
  text-align: left;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e0e0e0;
}

.page-index__brand-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.page-index__brand-item h3 {
  font-size: 1.6em;
  color: var(--primary-color);
  margin-bottom: 15px;
}

.page-index__brand-item p {
  font-size: 1.05em;
  color: var(--text-color-light-bg);
}

.page-index__brand-image {
  width: 100%;
  height: 250px; /* Fixed height for consistency */
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 20px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* FAQ Section */
.page-index__faq-section {
  padding: 80px 20px;
  background-color: var(--background-color-dark);
  color: var(--text-color-dark-bg);
}

.page-index__faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.page-index__faq-main-title {
  font-size: 2.5em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 50px;
  color: var(--primary-color);
}

details.page-index__faq-item {
  margin-bottom: 15px;
  border-radius: 10px;
  border: 1px solid #023d1e; /* Darker border for dark background */
  overflow: hidden;
  background: #0d0d0d; /* Slightly lighter dark background for cards */
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

details.page-index__faq-item summary.page-index__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;
  color: var(--text-color-dark-bg);
  font-size: 1.1em;
  font-weight: 600;
}

details.page-index__faq-item summary.page-index__faq-question::-webkit-details-marker {
  display: none;
}

details.page-index__faq-item summary.page-index__faq-question:hover {
  background: #1a1a1a; /* Darker hover for dark background */
}

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

.page-index__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--primary-color);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}

details.page-index__faq-item .page-index__faq-answer {
  padding: 0 25px 25px;
  background: #0d0d0d; /* Same as card background */
  border-radius: 0 0 10px 10px;
  color: #f0f0f0; /* Slightly off-white for answer text */
}

details.page-index__faq-item .page-index__faq-answer p {
  margin-bottom: 0;
}

/* Blog Section */
.page-index__blog-section {
  padding: 80px 20px;
  background-color: var(--background-color-light);
  color: var(--text-color-light-bg);
}

.page-index__blog-container {
  max-width: 1200px;
  margin: 0 auto;
}

.page-index__blog-title {
  font-size: 2.5em;
  font-weight: bold;
  text-align: center;
  margin-bottom: 50px;
  color: var(--primary-color);
}

.page-index__blog-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-index__blog-item {
  background: #ffffff;
  border-radius: 10px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid #e0e0e0;
}

.page-index__blog-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.page-index__blog-link {
  text-decoration: none;
  display: block;
  color: inherit;
}

.page-index__blog-item-image {
  width: 100%;
  height: 200px; /* Consistent image height for blog cards */
  object-fit: cover;
  display: block;
}

.page-index__blog-item-content {
  padding: 20px;
}

.page-index__blog-item-title {
  font-size: 1.4em;
  font-weight: bold;
  color: var(--text-color-light-bg);
  margin-bottom: 10px;
}

.page-index__blog-item-excerpt {
  font-size: 0.95em;
  color: #555555;
  margin-bottom: 15px;
}

.page-index__blog-item-date {
  font-size: 0.85em;
  color: #888888;
  display: block;
}

.page-index__view-all-button-container {
  text-align: center;
  margin-top: 20px;
}

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

@media (max-width: 768px) {
  .page-index {
    font-size: 16px;
    line-height: 1.6;
  }

  /* Fixed header offset for mobile */
  .page-index__video-section {
    padding-top: var(--header-offset, 120px) !important;
    padding-bottom: 40px;
    padding-left: 15px;
    padding-right: 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    overflow: hidden !important;
  }

  .page-index__video-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 0;
    padding-right: 0;
    overflow: hidden !important;
  }

  .page-index__video-link {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }

  .page-index__video-wrapper {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    border-radius: 4px;
    overflow: hidden !important;
  }

  .page-index__video {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    border-radius: 4px;
    object-fit: contain;
  }

  .page-index__video-cta {
    margin-top: 20px;
    padding-left: 15px;
    padding-right: 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .page-index__play-now-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 30px !important;
    font-size: 16px !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }

  .page-index__video-click-hint {
    font-size: 14px !important;
    padding: 8px 16px !important;
  }

  .page-index__main-title {
    font-size: 2.2em;
  }

  .page-index__title-section {
    padding: 50px 15px;
  }

  .page-index__title-description {
    font-size: 1em;
  }

  .page-index__cta-buttons {
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
  }

  .page-index__cta-button {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 12px 25px !important;
    font-size: 1em !important;
    white-space: normal !important;
    word-wrap: break-word !important;
  }
  
  .page-index__brand-section,
  .page-index__faq-section,
  .page-index__blog-section {
    padding: 50px 15px;
  }

  .page-index__brand-title,
  .page-index__faq-main-title,
  .page-index__blog-title {
    font-size: 2em;
    margin-bottom: 30px;
  }

  .page-index__brand-content {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .page-index__brand-item {
    padding: 25px;
  }

  .page-index__brand-item h3 {
    font-size: 1.4em;
  }

  .page-index__brand-item p {
    font-size: 0.95em;
  }

  .page-index__brand-image {
    height: 200px;
  }

  details.page-index__faq-item summary.page-index__faq-question {
    padding: 15px 20px;
    font-size: 1em;
  }

  .page-index__faq-qtext {
    font-size: 1em;
  }

  .page-index__faq-toggle {
    font-size: 20px;
    width: 24px;
    height: 24px;
  }

  details.page-index__faq-item .page-index__faq-answer {
    padding: 0 20px 20px;
  }

  .page-index__blog-list {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .page-index__blog-item-image {
    height: 180px;
  }

  .page-index__blog-item-title {
    font-size: 1.2em;
  }

  .page-index__blog-item-excerpt {
    font-size: 0.9em;
  }

  /* Images responsive */
  .page-index img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }

  /* Containers for images/videos/buttons */
  .page-index__section,
  .page-index__card,
  .page-index__container,
  .page-index__cta-buttons,
  .page-index__button-group,
  .page-index__btn-container,
  .page-index__video-section,
  .page-index__video-container,
  .page-index__video-wrapper,
  .page-index__blog-item-content {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    overflow: hidden !important;
  }
}

@media (max-width: 480px) {
  .page-index__main-title {
    font-size: 1.8em;
  }
  .page-index__brand-title,
  .page-index__faq-main-title,
  .page-index__blog-title {
    font-size: 1.8em;
  }
  .page-index__play-now-button {
    font-size: 14px !important;
    padding: 10px 25px !important;
  }
}