/* Biến màu sắc */
:root {
  --color-primary: #11A84E;
  --color-secondary: #22C768;
  --color-button-gradient: linear-gradient(180deg, #2AD16F 0%, #13994A 100%);
  --color-card-bg: #11271B;
  --color-background-dark: #08160F;
  --color-text-main: #F2FFF6;
  --color-text-secondary: #A7D9B8;
  --color-border: #2E7A4E;
  --color-glow: #57E38D;
  --color-gold: #F2C14E;
  --color-divider: #1E3A2A;
  --color-deep-green: #0A4B2C;
  --color-white: #ffffff;
  --color-light-gray: #f5f5f5;
  --color-dark-gray: #333333;
  --color-black: #000000;
}

/* Base styles for the page content */
.page-blog {
  font-family: 'Arial', sans-serif;
  color: var(--color-dark-gray); /* Default text color for light background */
  background-color: var(--color-light-gray); /* Default light background, assuming shared.css might set a dark one */
  line-height: 1.6;
  padding-top: 10px; /* Small top padding, assuming body has header offset */
}

.page-blog h1, .page-blog h2, .page-blog h3, .page-blog h4, .page-blog h5, .page-blog h6 {
  font-weight: 700;
  color: var(--color-dark-gray);
  line-height: 1.2;
  margin-bottom: 15px;
}

.page-blog p {
  margin-bottom: 1em;
}

.page-blog a {
  color: var(--color-primary);
  text-decoration: none;
}

.page-blog a:hover {
  text-decoration: underline;
}

/* Sections */
.page-blog__section-padding {
  padding: 40px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

.page-blog__section-title {
  font-size: clamp(28px, 4vw, 36px);
  text-align: center;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.page-blog__section-description {
  font-size: 18px;
  text-align: center;
  margin-bottom: 40px;
  color: var(--color-dark-gray);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Hero Section */
.page-blog__hero-section {
  position: relative;
  width: 100%;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: 10px; /* Consistent small top padding */
  background-color: var(--color-background-dark);
}

.page-blog__hero-image-wrapper {
  width: 100%;
  height: 600px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.page-blog__hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover; /* Default to cover for desktop */
  display: block;
}

.page-blog__hero-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 30px 20px;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0) 100%);
  color: var(--color-white);
  max-width: 1200px;
  margin: 0 auto;
}

.page-blog__main-title {
  font-size: clamp(32px, 5vw, 48px);
  color: var(--color-gold);
  margin-bottom: 10px;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

.page-blog__hero-description {
  font-size: 18px;
  margin-bottom: 25px;
  color: var(--color-text-main);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

/* Buttons */
.page-blog__btn-primary,
.page-blog__btn-secondary {
  display: inline-block;
  padding: 12px 25px;
  border-radius: 8px;
  font-weight: 600;
  text-align: center;
  transition: all 0.3s ease;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  word-wrap: break-word;
  box-sizing: border-box;
  max-width: 100%;
}

.page-blog__btn-primary {
  background: var(--color-button-gradient);
  color: var(--color-white);
  border: none;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.page-blog__btn-primary:hover {
  filter: brightness(1.1);
  transform: translateY(-2px);
}

.page-blog__btn-secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.page-blog__btn-secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Latest Posts Grid */
.page-blog__posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-bottom: 40px;
}

.page-blog__post-card {
  background: var(--color-white);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
}

.page-blog__post-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.page-blog__post-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  display: block;
}

.page-blog__post-content {
  padding: 20px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.page-blog__post-title {
  font-size: 20px;
  margin-bottom: 10px;
  line-height: 1.3;
}

.page-blog__post-title a {
  color: var(--color-dark-gray);
  font-weight: 600;
}

.page-blog__post-title a:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.page-blog__post-meta {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 15px;
}

.page-blog__post-excerpt {
  font-size: 15px;
  color: var(--color-dark-gray);
  margin-bottom: 20px;
  flex-grow: 1;
}

.page-blog__read-more {
  color: var(--color-primary);
  font-weight: 600;
  text-decoration: none;
  align-self: flex-start;
}

.page-blog__read-more:hover {
  text-decoration: underline;
}

.page-blog__view-all-posts {
  text-align: center;
  margin-top: 30px;
}

/* Categories Section */
.page-blog__categories-section {
  background-color: var(--color-background-dark);
  color: var(--color-text-main);
}

.page-blog__categories-section .page-blog__section-title {
  color: var(--color-gold);
}

.page-blog__categories-section .page-blog__section-description {
  color: var(--color-text-secondary);
}

.page-blog__category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
}

.page-blog__category-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 25px;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.page-blog__category-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.3);
  border-color: var(--color-primary);
}

.page-blog__category-title {
  font-size: 22px;
  color: var(--color-text-main);
  margin-bottom: 8px;
}

.page-blog__category-card:hover .page-blog__category-title {
  color: var(--color-primary);
}

.page-blog__category-count {
  font-size: 15px;
  color: var(--color-text-secondary);
}

/* Deep Dive Articles */
.page-blog__article-body {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
  color: var(--color-dark-gray);
}

.page-blog__article-body h3 {
  font-size: 24px;
  color: var(--color-primary);
  margin-top: 35px;
  margin-bottom: 15px;
}

.page-blog__article-body p {
  font-size: 16px;
  margin-bottom: 20px;
  line-height: 1.7;
}

.page-blog__article-figure {
  width: 100%;
  height: auto;
  display: block;
  margin: 25px 0;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* FAQ Section */
.page-blog__faq-section {
  background-color: var(--color-light-gray);
}

details.page-blog__faq-item {
  margin-bottom: 15px;
  border-radius: 5px;
  border: 1px solid var(--color-border);
  overflow: hidden;
  background: var(--color-white);
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}
details.page-blog__faq-item summary.page-blog__faq-question {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: background-color 0.3s ease;
}
details.page-blog__faq-item summary.page-blog__faq-question::-webkit-details-marker {
  display: none;
}
details.page-blog__faq-item summary.page-blog__faq-question:hover {
  background: var(--color-light-gray);
}
.page-blog__faq-qtext {
  flex: 1;
  font-size: 17px;
  font-weight: 600;
  line-height: 1.5;
  text-align: left;
  color: var(--color-dark-gray);
}
.page-blog__faq-toggle {
  font-size: 24px;
  font-weight: bold;
  color: var(--color-primary);
  flex-shrink: 0;
  margin-left: 15px;
  width: 28px;
  text-align: center;
}
details.page-blog__faq-item .page-blog__faq-answer {
  padding: 0 20px 20px;
  background: var(--color-light-gray);
  border-radius: 0 0 5px 5px;
  color: var(--color-dark-gray);
}

/* CTA Section */
.page-blog__cta-section {
  background-color: var(--color-primary);
  color: var(--color-white);
  text-align: center;
}

.page-blog__cta-title {
  font-size: clamp(26px, 4vw, 38px);
  color: var(--color-white);
  margin-bottom: 15px;
}

.page-blog__cta-description {
  font-size: 18px;
  margin-bottom: 30px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
  color: var(--color-text-main);
}

.page-blog__cta-buttons {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
}

/* --- Responsive Styles --- */

/* Tablet (max-width: 1024px) - General adjustments */
@media (max-width: 1024px) {
  .page-blog__section-padding {
    padding: 30px 15px;
  }
  .page-blog__hero-image-wrapper {
    height: 500px;
  }
  .page-blog__hero-content {
    padding: 20px 15px;
  }
  .page-blog__main-title {
    font-size: clamp(28px, 4.5vw, 42px);
  }
  .page-blog__hero-description {
    font-size: 16px;
  }
  .page-blog__posts-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
  }
  .page-blog__category-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
  }
  .page-blog__article-body {
    padding: 0 15px;
  }
  .page-blog__faq-qtext {
    font-size: 16px;
  }
}

/* Mobile (max-width: 768px) - Must include all required sections */
@media (max-width: 768px) {
  /* HERO 主图区域 */
  .page-blog__hero-section {
    padding-top: 10px; /* Small top padding, not var(--header-offset) */
  }
  .page-blog__hero-image-wrapper {
    height: 300px;
    overflow: hidden;
  }
  .page-blog__hero-image {
    object-fit: contain !important;
    aspect-ratio: unset !important; /* Allow image to scale within container */
    width: 100% !important;
    height: auto !important;
  }
  .page-blog__hero-content {
    position: relative;
    background: var(--color-background-dark); /* Ensure background for text */
    padding: 20px 15px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  .page-blog__main-title {
    font-size: clamp(24px, 6vw, 36px);
    margin-bottom: 10px;
    word-wrap: break-word;
  }
  .page-blog__hero-description {
    font-size: 15px;
    margin-bottom: 20px;
  }

  /* 产品展示图区域 - Not applicable for blog page, but general grid needs to be responsive */
  .page-blog__posts-grid {
    grid-template-columns: 1fr; /* Single column for mobile */
    gap: 20px;
    overflow-x: hidden !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__post-card {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }
  .page-blog__post-image {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
  }

  /* 装饰主标题 + 长文 SEO 区 */
  .page-blog__section-title {
    font-size: clamp(24px, 6vw, 30px);
    margin-bottom: 15px;
    padding: 0 10px;
    word-wrap: break-word;
  }
  .page-blog__section-description {
    font-size: 15px;
    margin-bottom: 25px;
    padding: 0 10px;
  }
  .page-blog__article-body {
    padding: 0 15px;
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
  }
  .page-blog__article-body h3 {
    font-size: 20px;
    margin-top: 25px;
    margin-bottom: 10px;
    word-wrap: break-word;
  }
  .page-blog__article-body p {
    font-size: 15px;
  }
  .page-blog__article-figure {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    margin: 20px 0;
  }

  /* 通用图片与容器 */
  .page-blog img {
    max-width: 100% !important;
    width: 100% !important;
    height: auto !important;
    display: block !important;
  }
  .page-blog__section, .page-blog__card, .page-blog__container, .page-blog__cta-content {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
  }
  .page-blog__section-padding {
    padding: 25px 0;
  }

  /* 按钮与按钮容器 */
  .page-blog__btn-primary,
  .page-blog__btn-secondary,
  .page-blog a[class*="button"],
  .page-blog a[class*="btn"] {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    white-space: normal !important;
    word-wrap: break-word !important;
    padding: 10px 15px;
    font-size: 16px;
  }
  .page-blog__cta-buttons,
  .page-blog__button-group,
  .page-blog__btn-container {
    max-width: 100% !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding-left: 15px;
    padding-right: 15px;
    flex-direction: column !important; /* Stack buttons vertically */
    gap: 10px;
  }

  /* Categories Grid */
  .page-blog__category-grid {
    grid-template-columns: 1fr; /* Single column for mobile */
    gap: 15px;
  }
  .page-blog__category-card {
    padding: 20px;
  }
  .page-blog__category-title {
    font-size: 20px;
  }

  /* FAQ */
  details.page-blog__faq-item summary.page-blog__faq-question {
    padding: 15px;
  }
  .page-blog__faq-qtext {
    font-size: 15px;
  }
  .page-blog__faq-toggle {
    font-size: 20px;
    width: 24px;
  }
  details.page-blog__faq-item .page-blog__faq-answer {
    padding: 0 15px 15px;
  }

  /* CTA */
  .page-blog__cta-title {
    font-size: clamp(22px, 5vw, 30px);
  }
  .page-blog__cta-description {
    font-size: 15px;
  }
}